SDE 4.1 and Visual Studio 2005 "FREEZE"

I´m currently evaluating SDE 4.1 for Visual Studio Enterprise Edition, but I´m not able to do anything. Everytime I try to do some action (menu command, delete class, set stereotyp, update model, …) mit IDE seems to freeze for a very long time. Sometimes it comes back, but mostly not.
So it is not possible to work with the product.

Does anybody know the problem?

Hello BDiegelmann

Would you mind send me the vp.log file to have a look? You can find the vp.log file inside the VP Suite/visualstudio2005 folder. Thanks in advance!

Best regards,
Rain Wong