I upgraded manually (no deps) and have had no problems with 3.0.10 over the past week or so.
gslapt, though, tells me it has an "upgrade": Firefox 3.0.9. For some reason it thinks 9 is a bigger number than 10.
eMachines EL-1300G desktop, 1.6GHz AMD Athlon 2650e CPU, 4GB RAM, nVidia GeForce 6150 SE video
CentOS 6.5 (will try VL64-7.1 soon)
Toshiba Satellite A135-S4727, Intel Pentium T2080 / 1.73 GHz, 2GB RAM, Intel GMA 950
HP Mini 110 netbook, 1.6GHz Intel Atom CPU, 2GB RAM, Intel 950 video, VL 7.1