Problems with Rotate function

[Lockheed]

I tried to rotate some pictures already added to albums.
Oroginal picture rotates well, however both thumbnail and intermediate picture just change dimensions but not photo orientation.
This which results in unnatural stretch of the picture which is still lying on it's side.
I tried reloading thumbnails in Admin menu but it doesn't change anything.
How can I solve that problem?

[Nibbler]

Did you clear your cache? Post a link to the picture you are talking about.

[Lockheed]

Well, I tried another browser and then Opera again and it works now.
Strange, before I used to hiy F5 for few days but it didn't work.

Seems it was cache after all. Thanks for the reminder.