Beta 5 Install Problems on Vista

I submitted bug reports before for beta 3 & 4 on Vista SP2, detailing installation problems & ultimately having to uninstall due to hangs & computer not rebooting. I am pleased to report that beta 5 installs, although with initial error when first trying to open Start Center, and computer successfully reboots.

Running subsequent to this though, my browsers all seem to struggle a lot more to successfully open pages and my initial computer scan took several hours with the Google Chrome extension repeatedly crashing & displaying a restart balloon. Have since disabled this extension as it seems to keep hanging machine & then only freeing up again when relaunch message balloon is displayed.

I am happy to uninstall/reinstall, run any tests & forward any logs that may be of use if this would be of any use.