Can I get any help with this one? Is it WiseStamp's fault? Mozilla's fault? Or caused by a conflict incompatibility issue with another simultaneously running script? or perhaps something else I'm not even thinking of?
Running FF 3.6.1
SP3, with all of the latest MS updates
If it does work in Safe-mode then disable all your extensions and then try to find which is causing it by enabling one at a time until the problem reappears.
You can use "Disable all add-ons" on the Troubleshoot Firefox issues using Safe Mode start window to disable all extensions.
You have to close and restart Firefox after each change via "File > Exit" (Mac: "Firefox > Quit"; Linux: "File > Quit")