Lately some people have been having problems with it (but i uploaded quite a few Bilder the other day).
Are Du trying to Upload multiple Bilder at once? Are they correct image file types? (jpg, gif, png) Were Du able to Upload Bilder before? Have Du tried using a different browser to Upload images? (if Du use Internet Explorer, try using Firefox, vice versa...or if you're on a Mac then Safari(?) oder Firefox) Are they very large images? (900pixels wide/high +) Have Du recently updated things like Flash and Java, etc?
Any of the above details could be helpful. oder it could just be site issues and it will fix soon.