logs attached

First attempt:
2013-04-10 13:57:32::ERROR::common_utils::355::root:: YUM: FAIL: Error in PREUN scriptlet in rpm package ovirt-engine-backend-3.3.0-15.fc17.noarch
2013-04-10 13:57:32::DEBUG::common_utils::347::root:: YUM: VERB: Script sink: /var/tmp/rpm-tmp.J0HyUz: line 1: fg: no job control
error: %preun(ovirt-engine-backend-3.3.0-15.fc17.noarch) scriptlet failed, exit status 1
2013-04-10 13:57:32::DEBUG::common_utils::347::root:: YUM: VERB: Done: ovirt-engine-backend-3.3.0-15.fc17.noarch

Second attempt:
2013-04-10 15:12:11::DEBUG::common_utils::347::root:: YUM: VERB: Building transaction
2013-04-10 15:12:12::ERROR::common_utils::355::root:: YUM: FAIL: [u'ovirt-engine-backend-3.3.0-14.fc17.noarch requires ovirt-engine = 3.3.0-14.fc17']
2013-04-10 15:12:12::DEBUG::common_utils::347::root:: YUM: VERB: Performing rollback
2013-04-10 15:12:12::DEBUG::common_utils::1410::root:: Locking rpms in yum-version-lock
2013-04-10 15:12:12::ERROR::engine-upgrade::1299::root:: Traceback (most recent call last):
  File "/bin/engine-upgrade", line 1292, in <module>
    main(options)
  File "/bin/engine-upgrade", line 1142, in main
    runFunc([rhyum.begin], MSG_INFO_CHECK_UPDATE)
  File "/bin/engine-upgrade", line 617, in runFunc
    func()
  File "/bin/engine-upgrade", line 310, in begin
    self.emptyTransaction = not self._miniyum.buildTransaction()
  File "/usr/share/ovirt-engine/scripts/miniyum.py", line 761, in buildTransaction
    raise yum.Errors.YumBaseError(msg)
YumBaseError: [u'ovirt-engine-backend-3.3.0-14.fc17.noarch requires ovirt-engine = 3.3.0-14.fc17']

Realizing things were now hosed:
[root@ovirtfoo /]# yum erase ovirt-* otopi-*
Loaded plugins: langpacks, presto, refresh-packagekit, versionlock
Resolving Dependencies
--> Running transaction check
---> Package otopi.noarch 0:3.3.0-15.fc17 will be erased
---> Package otopi-java.noarch 0:3.3.0-15.fc17 will be erased
---> Package ovirt-engine.noarch 0:3.3.0-14.fc17 will be erased
---> Package ovirt-engine-backend.noarch 0:3.3.0-14.fc17 will be erased
---> Package ovirt-engine-backend.noarch 0:3.3.0-15.fc17 will be erased
---> Package ovirt-engine-cli.noarch 0:3.3.0.1-15.fc17 will be erased
---> Package ovirt-engine-dbscripts.noarch 0:3.3.0-14.fc17 will be erased
---> Package ovirt-engine-restapi.noarch 0:3.3.0-14.fc17 will be erased
---> Package ovirt-engine-sdk.noarch 0:3.3.0.1-15.fc17 will be erased
---> Package ovirt-engine-setup.noarch 0:3.3.0-15.fc17 will be erased
---> Package ovirt-engine-tools.noarch 0:3.3.0-14.fc17 will be erased
---> Package ovirt-engine-userportal.noarch 0:3.3.0-14.fc17 will be erased
---> Package ovirt-engine-webadmin-portal.noarch 0:3.3.0-14.fc17 will be erased
---> Package ovirt-host-deploy.noarch 0:3.3.0-15.fc17 will be erased
---> Package ovirt-host-deploy-java.noarch 0:3.3.0-15.fc17 will be erased
---> Package ovirt-image-uploader.noarch 0:3.3.0-15.fc17 will be erased
---> Package ovirt-iso-uploader.noarch 0:3.3.0-15.fc17 will be erased
---> Package ovirt-log-collector.noarch 0:3.3.0-15.fc17 will be erased
--> Finished Dependency Resolution

Dependencies Resolved

================================================================================
 Package                       Arch    Version             Repository      Size
================================================================================
Removing:
 otopi                         noarch  3.3.0-15.fc17       @ovirt-engine  463 k
 otopi-java                    noarch  3.3.0-15.fc17       @ovirt-engine   27 k
 ovirt-engine                  noarch  3.3.0-14.fc17       @ovirt-engine  1.3 M
 ovirt-engine-backend          noarch  3.3.0-14.fc17       @ovirt-engine   20 M
 ovirt-engine-backend          noarch  3.3.0-15.fc17       @ovirt-engine   20 M
 ovirt-engine-cli              noarch  3.3.0.1-15.fc17     @ovirt-engine  557 k
 ovirt-engine-dbscripts        noarch  3.3.0-14.fc17       @ovirt-engine  816 k
 ovirt-engine-restapi          noarch  3.3.0-14.fc17       @ovirt-engine  1.0 M
 ovirt-engine-sdk              noarch  3.3.0.1-15.fc17     @ovirt-engine  3.1 M
 ovirt-engine-setup            noarch  3.3.0-15.fc17       @ovirt-engine  653 k
 ovirt-engine-tools            noarch  3.3.0-14.fc17       @ovirt-engine  178 k
 ovirt-engine-userportal       noarch  3.3.0-14.fc17       @ovirt-engine   23 M
 ovirt-engine-webadmin-portal  noarch  3.3.0-14.fc17       @ovirt-engine   32 M
 ovirt-host-deploy             noarch  3.3.0-15.fc17       @ovirt-engine  211 k
 ovirt-host-deploy-java        noarch  3.3.0-15.fc17       @ovirt-engine   11 k
 ovirt-image-uploader          noarch  3.3.0-15.fc17       @ovirt-engine  923 k
 ovirt-iso-uploader            noarch  3.3.0-15.fc17       @ovirt-engine   98 k
 ovirt-log-collector           noarch  3.3.0-15.fc17       @ovirt-engine  133 k

Transaction Summary
================================================================================
Remove  18 Packages

Installed size: 104 M
Is this ok [y/N]: y
Downloading Packages:
Running Transaction Check
Running Transaction Test
Transaction Test Succeeded
Running Transaction
  Erasing    : ovirt-engine-backend.noarch                                 1/18
  Erasing    : ovirt-engine-dbscripts-3.3.0-14.fc17.noarch                 2/18
  Erasing    : ovirt-engine-restapi-3.3.0-14.fc17.noarch                   3/18
  Erasing    : ovirt-engine-setup-3.3.0-15.fc17.noarch                     4/18
  Erasing    : ovirt-engine-tools-3.3.0-14.fc17.noarch                     5/18
  Erasing    : ovirt-engine-userportal-3.3.0-14.fc17.noarch                6/18
  Erasing    : ovirt-engine-3.3.0-14.fc17.noarch                           7/18
warning: /etc/ovirt-engine/engine.conf saved as /etc/ovirt-engine/engine.conf.rpmsave
  Erasing    : ovirt-engine-webadmin-portal-3.3.0-14.fc17.noarch           8/18
  Erasing    : ovirt-host-deploy-java-3.3.0-15.fc17.noarch                 9/18
  Erasing    : otopi-java-3.3.0-15.fc17.noarch                            10/18
  Erasing    : ovirt-host-deploy-3.3.0-15.fc17.noarch                     11/18
  Erasing    : ovirt-image-uploader-3.3.0-15.fc17.noarch                  12/18
warning: /etc/ovirt-engine/imageuploader.conf saved as /etc/ovirt-engine/imageuploader.conf.rpmsave
  Erasing    : ovirt-iso-uploader-3.3.0-15.fc17.noarch                    13/18
warning: /etc/ovirt-engine/isouploader.conf saved as /etc/ovirt-engine/isouploader.conf.rpmsave
  Erasing    : ovirt-log-collector-3.3.0-15.fc17.noarch                   14/18
warning: /etc/ovirt-engine/logcollector.conf saved as /etc/ovirt-engine/logcollector.conf.rpmsave
  Erasing    : ovirt-engine-cli-3.3.0.1-15.fc17.noarch                    15/18
  Erasing    : ovirt-engine-sdk-3.3.0.1-15.fc17.noarch                    16/18
  Erasing    : otopi-3.3.0-15.fc17.noarch                                 17/18
Error in PREUN scriptlet in rpm package ovirt-engine-backend
/var/tmp/rpm-tmp.uFqX1f: line 1: fg: no job control
error: %preun(ovirt-engine-backend-3.3.0-15.fc17.noarch) scriptlet failed, exit status 1
  Verifying  : otopi-3.3.0-15.fc17.noarch                                  1/18
  Verifying  : otopi-java-3.3.0-15.fc17.noarch                             2/18
  Verifying  : ovirt-log-collector-3.3.0-15.fc17.noarch                    3/18
  Verifying  : ovirt-engine-webadmin-portal-3.3.0-14.fc17.noarch           4/18
  Verifying  : ovirt-host-deploy-3.3.0-15.fc17.noarch                      5/18
  Verifying  : ovirt-engine-tools-3.3.0-14.fc17.noarch                     6/18
  Verifying  : ovirt-engine-setup-3.3.0-15.fc17.noarch                     7/18
  Verifying  : ovirt-engine-sdk-3.3.0.1-15.fc17.noarch                     8/18
  Verifying  : ovirt-engine-restapi-3.3.0-14.fc17.noarch                   9/18
  Verifying  : ovirt-engine-userportal-3.3.0-14.fc17.noarch               10/18
  Verifying  : ovirt-host-deploy-java-3.3.0-15.fc17.noarch                11/18
  Verifying  : ovirt-image-uploader-3.3.0-15.fc17.noarch                  12/18
  Verifying  : ovirt-iso-uploader-3.3.0-15.fc17.noarch                    13/18
  Verifying  : ovirt-engine-cli-3.3.0.1-15.fc17.noarch                    14/18
ovirt-engine-backend-3.3.0-15.fc17.noarch was supposed to be removed but is not!
  Verifying  : ovirt-engine-backend-3.3.0-15.fc17.noarch                  15/18
  Verifying  : ovirt-engine-backend-3.3.0-14.fc17.noarch                  16/18
  Verifying  : ovirt-engine-3.3.0-14.fc17.noarch                          17/18
  Verifying  : ovirt-engine-dbscripts-3.3.0-14.fc17.noarch                18/18

Removed:
  otopi.noarch 0:3.3.0-15.fc17                                                 
  otopi-java.noarch 0:3.3.0-15.fc17                                            
  ovirt-engine.noarch 0:3.3.0-14.fc17                                          
  ovirt-engine-backend.noarch 0:3.3.0-14.fc17                                  
  ovirt-engine-cli.noarch 0:3.3.0.1-15.fc17                                    
  ovirt-engine-dbscripts.noarch 0:3.3.0-14.fc17                                
  ovirt-engine-restapi.noarch 0:3.3.0-14.fc17                                  
  ovirt-engine-sdk.noarch 0:3.3.0.1-15.fc17                                    
  ovirt-engine-setup.noarch 0:3.3.0-15.fc17                                    
  ovirt-engine-tools.noarch 0:3.3.0-14.fc17                                    
  ovirt-engine-userportal.noarch 0:3.3.0-14.fc17                               
  ovirt-engine-webadmin-portal.noarch 0:3.3.0-14.fc17                          
  ovirt-host-deploy.noarch 0:3.3.0-15.fc17                                     
  ovirt-host-deploy-java.noarch 0:3.3.0-15.fc17                                
  ovirt-image-uploader.noarch 0:3.3.0-15.fc17                                  
  ovirt-iso-uploader.noarch 0:3.3.0-15.fc17                                    
  ovirt-log-collector.noarch 0:3.3.0-15.fc17                                   

Failed:
  ovirt-engine-backend.noarch 0:3.3.0-15.fc17                                  

Complete!
[root@ovirtfoo /]# rpm -qa | grep oto
protobuf-java-2.4.1-12.fc17.x86_64
libgphoto2-2.4.14-1.fc17.x86_64
[root@ovirtfoo /]# rpm -qa | grep ovirt
ovirt-engine-backend-3.3.0-15.fc17.noarch
[root@ovirtfoo /]# yum erase ovirt-engine-backend-3.3.0-15.fc17.noarch
Loaded plugins: langpacks, presto, refresh-packagekit, versionlock
Resolving Dependencies
--> Running transaction check
---> Package ovirt-engine-backend.noarch 0:3.3.0-15.fc17 will be erased
--> Finished Dependency Resolution

Dependencies Resolved

================================================================================
 Package                  Arch       Version            Repository         Size
================================================================================
Removing:
 ovirt-engine-backend     noarch     3.3.0-15.fc17      @ovirt-engine      20 M

Transaction Summary
================================================================================
Remove  1 Package

Installed size: 20 M
Is this ok [y/N]: y
Downloading Packages:
Running Transaction Check
Running Transaction Test
Transaction Test Succeeded
Running Transaction
Error in PREUN scriptlet in rpm package ovirt-engine-backend-3.3.0-15.fc17.noarch
/var/tmp/rpm-tmp.jq1b7e: line 1: fg: no job control
error: %preun(ovirt-engine-backend-3.3.0-15.fc17.noarch) scriptlet failed, exit status 1
  Verifying  : ovirt-engine-backend-3.3.0-15.fc17.noarch                    1/1

Failed:
  ovirt-engine-backend.noarch 0:3.3.0-15.fc17                                  

Complete!

- DHC