Brand new OS build is corrupted after installing F-Secure IS
I wipe and reinstall the OS for almost no reason at all: suspicion of malware, a few software products have changed, etc. I have a few PCs, so having one down is no big deal. I wiped and reinstalled W-7 today. I installed all Windows Updates, Microsoft Office 2010, and more Microsoft Updates. I rebooted as requested. Then I installed F-Secure IS. It's been my experience that anti-virus products require a reboot after installation, so I did. Then I saw something I have never seen before, the Preparing Desktop message, long after the initial installation of W-7. It took a long time, but eventually it logged me in, only to present a screen straight out of XP. There was a message at the top complaining about profiles or desktops missing. Windows was unusable. I rebooted and then the desktop looked like W-7, but the font sizes were all screwed up, some large some small. I set text size to small, logged off, logged on, set the text size to medium, logged off, logged on, and the font sizes appeared to be correct. But there are still strange things going on, with different colors in various places.
Obviously I am going to wipe and reinstall again. But now I wonder about F-Secure. Have any bugs been reported similar to my experience?
The above involves genuine W-7 64-bit and genuine Office 2010, with both having been validated. Device Manager reports no errors.