OT File icon change

[Longstreet]

The first time I noticed this was when I went to send my game turn to the PBW. The text files in SEIV save game folder had changed from their normal icon. Then I checked other text and Zip files and found them all changed. As I was advised I rebooted computer and all was OK. Did a 3 and a half hour system virus scan and came up clean. I am just a little confused what could be causing this and why now. Have not installed any new programs lately. Rebooting seems to fix the change. Today when I first booted up there was no problem with the file icons at all. I keep thinking someone is going to say "you have just entered the Twilight Zone" Thanks for the quick response.