Some time ago I reported a bug
and I noticed that you didn't fix it in the new release. It seems that something has changed (writes are faster than before, although tiled writings are overwhelmingly slow yet), but the bug seems to be still there.
What I'd really appreciate is an URL where I can track the status of this bug, because I depend on it to run some tests on the 8800GTX (so I cannot use 8xxx drivers) and you don't seem to be publishing a bug status report with your releases. I've been searching for some kind of public bug tracker of yours but I didn't find it. It is frustrating not to know if someone is working on your problem and how it is evolving.