Well, if just parts of you skin disappears into "nothing" it can also be the studio.xnf... have you tried to delete it? (take a backup of it if you have lots of personal settings and deleting it didn't help) if it helped, you need to wack that studio.xnf for good.
Also, if you're gonna try to delete/move the studio.xnf, DO CLOSE ALL APPS connected with winamp, as the tray, agent and wait a few seconds after you've closed everthing which winamp runs, so the studio.xnf updates. Then you can move/delete it, and then run winamp again. If you delete the file while winamp is running, the variables are written from the memory, creating a new one with the old variables (since they were stored in the memory).
The studio.xnf is created/updated upon winamp termination, and the file is read when winamp is loaded.
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