Just emerged the latest nvidia-kernel/glx (1.0.7174), and so far have seen no problems or regressions to the previous ones on my system. (Dual AMD Athlon MP 1.2Ghz, GF FX5200, 128meg) Just thought you'd want to know.
:) I think I should give some critism ;) Just like one version ago, this version also crashes X.org with some Firefoxing and system load. I managed to get some dmesg output: NVRM: Xid: 13, 0000 02055600 00000056 00000100 00000000 00000080
many other issues need to be resolved first (search bugzilla)