I'm getting some screen freezes using this PPA.
It started happening when I added this PPA, then I tried reverting to the standard packages in Natty and it went away. I started using this PPA again yesterday and the freezes are back.

What happens is that the screen freezes, nothing updates, but the cursor I am able to move around. I can switch to another VT and restart gdm, which then loads on a new VT and I am able to work again.
Also, the freezes usually happen when I perform some action. It can be anything really, opening a new program, clicking something, in other words, they don't happen when the computer sits around doing nothing, it's as if some action triggers it. Usually it's a new window opening, if I recall correctly.

Any idea how to debug this?