If you go to Softpedia.com and click the Windows button you'll see an announcement and download links for Firefox 3.6 RC1. I just put it on both my PCs(W7 32 bit and Vista64 SP1.) Those running GradientIcool Blue theme may have to reload/reinstall the theme. After I did that using FEBE addon, my AddOn buttons showed in the status bar again. It passed my litmus tests. The pop-down descriptions on TV Guide site work, Silverlight video works on Netflix, and my AutoCopy AddOn copies. So far I haven't found any quirks or bugs.