not just overclocked systems have the problem, my computer [asus eeepc 1000H, bog standard hardware] is having exsactly the same problem. doesnt seem to be happening with mpeg file types tho
ever since i installed VLC 1.1.5 the audio from (divx encoded) .avi's has been all glitchy and skippy. my computer is rather slow, but the audio wasnt glitched in version 1.1.4