I bought my copy of Win 7 64bit from an official retailer.
I installed it in summer, never had any trial versions but did a clean install of Win 7 on a new harddrive.
Activation worked just fine.
Now, this morning I found a message on my screen that told me that my copy might not be genuine. I clicked on "Later" because I want to find out what this is about before I do anything.
Windows then behaved as usual.
I followed the advice in this thread: License Information for Windows 7
and the script host tells me my Windows is licensed. The system screen tells me it's activated.
So what is this all about?