So, I've got the latest toolbar version. And I randomly went to your site, and saw the note about how if you've been using it since before 0.6.2 you should go to the Options -> Advanced tab and revert it.
I think I'd been using it since then, so I went to do that, and as soon as I opened the Options window, everything froze. I could still use the mouse cursor, but I couldn't click anything. Whole thing went dead.
Did Ctrl-Alt-Del, and that only succeeded in bringing my screenres down to 640x480 and lowering the display down to like, 256 colors and probably 4-bit color mode.
Manual reboot, and a window pops up saying 'Windows has recovered from a serious error. Please report this error to Microsoft.', something like that.
This is probably not a good thing.