I have looked and found a few threads of people having similar problems but I can't find anywhere that has a solution that works for me. Everything skins beautifully with the exception of firefox which is really driving me crazy because I use firefox a lot. If you look at the screenshot in the link below you will see what I mean. Anyone have any ideas?
http://i34.photobucket.com/albums/d132/Lucrin/Skinmalfunction.jpg
EDIT: I have noticed now that a number of programs don't have a skinned titlebar. Photoshop CS3 for example has a titlebar just like firefox rather than the themed one. Autodesk Maya 2008 however has the skinned titlebar like it should. This is very strange.