Dear Applian: first of all, great plug-in, which can often be relied to upon to succeed at this task where others fail. For the past couple days, however, I believe the 3.0.8 release has been causing a serious problem with Firefox (initially 3.5.8 and now 3.6) on my Mac: opening new Firefox windows now takes approximately a full minute, sometimes even longer. I raised the issue on the Mozilla forum (see https://support.mozilla.com/en-US/forum/1/618972O), and based on the experiences and troubleshooting of a couple other users who have just started having the same problem, it seems all but certain that FVD is the extension responsible. I've disabled it for now, and the delay has gone away, but I hope this can be addressed in the next release: I would miss FVD, to be sure!