Okay... sinse you sure my system specs are so important...
Pentium III 866 MHz.
256 mb RAM
Windows Xp Pro SP2
Full Winamp installation v 5.12
No custom or downloaded plugins installed.
Since the problem only one error message appeared:
"Error updating DB file on disk. This should never really happen
Hit Retry to try again (recomended), or Cancel to abort (NOT recomended, and may leave the DB in an unuseable state)"
Problem is gone for a while after deleting studio.xnf and back again.
Unsuccessfully installed votex skin.
That's all i had to say... any more info needed?