Peterpan there are bugs in all versions of Poser, the testers do as much as they can to report them but it's all in the hands of the developers if they get fixed, Poser Pro 2010 has some of the best testers of any version as they're people like you & me who use Poser for fun & don't want bugs.

Windows 7 64Bit
Poser Pro 2010 SR1