Unfortunatly, I have to reopen this topic.
I have updated TurboActivate DLLs to 5.0.2 and it helped.
Our testers were not able to reproduce the problem any longer. However, some users, despite they actually have TurboActivate 5.0.2 (we double checked), are still facing the same issue, in addition, one of the users reported the following issue - The WMI repository on the computer is broken (after update). We will try to walk him through the solution from the FAQ.
Any info you need from us about the user's environment?