Comment 6 for bug 218345

I've installed 8.4 without problems (X1950 Pro, x86_64). Compared to 8.3, it improves scrolling in Firefox and Opera significantly when using Compiz. It also seems a little more stable under stress-testing (creating and destroying 100 OpenGL contexts asynchronously would cause the whole PC to lock up with 8.3. I haven't been able to reproduce the problem with 8.4). No negative side effects observed until now, and no new OpenGL extensions supported on 8.4.

For these reasons alone, fglrx 8.4 is a worthwhile update to Hardy. Besides, the version number fits nicely with Ubuntu 8.04 ;-)

Keep in mind that we'll probably be stuck with these drivers for 6 months at least, so improved stability and performance are important features.