After hearing the latest LugRadio podcast, I thought I'd try out this Beryl. To cut a long story short, it was rubbish so I removed it. However, I did notice a problem that occurred in Evolution when I was using Xgl, but not when I was using plain-old X.org. Watch the mayhem:

This is of course rather broken, and I'm not entirely sure why. This is how it's meant to look:

(This is of course, the synce-windowsmobile5 mailing list). On a first little look I can't seem to find any report of this happening elsewhere, but I'll have to look again. It also did another weird thing where all the folders would disappear from the left column in Evolution, and they would reappear when you moved your mouse over them, as if you were painting them on!

Lastly, on Beryl: the only useful things I found there were nicer animations for minimizing/maximizing (small details..) and the ALT+TAB window switcher. There might have been more, but it wasn't that impressive, just funny to watch a line of fire taking out a window you just minimised!