I can't think what it could be  - way too early in the morning, lol - but I had the same problem with IE after an update it really used to annoy me (to put it mildly!) that's why I changed to Firefox and I've never had any problems, or used IE since.  Hope you can get it sorted Kort :)

Andy

www.natural-photo.co.uk

"Dodging and burning are steps to take care of mistakes God made in establishing tonal relationships.  ~Ansel Adams"