Tip - Kde 3.2 transparent konsole overlay problem
 

Just a note,
There are quite a few known bugs with using the transparent schema
in "Konsole" (KDE 3.2). So many I didn't take the time to read them all.
After a clean install of Slack 10, I booted into KDE and one of the first
things I did was set it transparent. (I didn't know how buggy it was at the time)
All seemed well except that if I had TVTime running and opened any other
windows, the part of TVTime that was overlapped would go black and stay
that way. Also the preview function of Transcode was black in both AviDemux
and Gv4l. This happened even if Konsole was not running.
Setting konsole to the linux default schema solved all.

Just in case any one needs to know!

Black Transcode preview has returned, I jumped the gun!