FYI, perhaps this might be of help

"With all the talk lately about flashing screens, browser issues and whether this is a website or browser or computer issue, I thought this article showing recent browser speed test results might be of interest to some of us here.

http://www.linkedin.com/news?action...=eml-tod-b-ttle-96&ut=2bSqThFGUX_4U1

Since Firefox version 7 is being released today, I'm planning to upgrade."