I've been using Sabayon Linux for a couple of months on my laptop, a Pentium4 mobile 1.8GHz with just 256 mb of ram and an ATi Radeon Mobile 7500 and even XGL/Beryl works, just like everything else on this great distro. This week I found some time to try to install Sabayon on my primary desktop:
AMD Athlon 64 3500+
but I ran into the problems i'm about to describe, on both the 32 and 64-bit DVD versions.
The liveCD environment works fine, and the system installs normally, but KDE loads extremely slowly, and even when the desktop looks ready, the tray programs continue slowly to load one by one, until the startup music that plays several minutes after KDE starts. After that, every program I run seems to work normally, but takes forever to load. After the program loads, it works at normal speed. I really don't get it, because even if every program loads slowly, during the loading the hard drive doesnt rumble a lot, so I guess it is not a disk i/o problem.
Please someone help me, and let me know if you need more details. I've been a loyal SuSE user since version 7.3 but the last few versions really sucked, and on my laptop Sabayon works better for me than any SuSE ever did.