[Users] Win VM java problem

Hello, I have a strange problem with Windows 2003 server VM - any java app hangs, and javaw.exe process takes 98% of cpu. Then I transfered VM image to another server, and here it works. Any idea what happens? Misbehaving server has Xeon 5110 1.60 GHz CPU (VM's System Properties shows it as Intel Celeron_4x0 (Conroe/Merom Class Core 2)) and ovirt 3.0.0, and a working server has Xeon E5620 2.40GHz CPU (Westmere E56xx/L56xx/X56xx (Nehalem-C)) and recent ovirt git snapshot (from May 30). Regards, Nerijus