I get the same effect using Firefox 8 on Linux, so it's not browser specific. I suspect that there's a glitch with a login cookie, which would point to a problem in the board software, rather than something that SunshineMeadows could fix. That said, does anyone see this effect on Internet Explorer?
I'm not actually bothered by it myself, since I leave OuchToo open in a tab at all times anyway (I keep dozens of tabs open as a matter of course).
On a related note: Sunshine, does the board software get upgraded automatically if the developers issue a bug fix, or do you have to do it manually?