SOLVED - After trying to fix something which wasn't broken......

[Maurice]

Thanks Bald Brick, that's a handy one. I hadn't looked in 'Advanced' before.

[Bald Brick]

Thanks Bald Brick, that's a handy one. I hadn't looked in 'Advanced' before.

You're welcome. (But it's actually on the "General" tab ...)

[Maurice]

Don't know where I got that idea.  I tried out the shortcut right away without looking for it. When I did look it wasn't there and I find I'm still on kde 4.6.1, but yet I'm still fully updated.

[aguila]

The non-testers are still with 4.6.5, 4.8.3 is still in testing.

[Bald Brick]

Oops ...! Sorry.

[BobK54]

That simple three-finger salute toggles Kwin on and off easily in KDE 4.6.5 too!  When I run a 1GB reserved RAM instance in VBox on my 2GB-total machine sometimes Kwin will balk about resources and disable itself.  After using VBox and shutting it down I can get my desktop effects back again with a simple ALT-Shirt-F12.  Works great.