I am using Firefox version 6. Under Windows Vista Home Edition Premium, the application attempts to launch, but it hangs with only about 20K showing loaded in Task Manager. It will stay with only that small amount of RAM used for extended (several hours) period of time with no change, and no launch. It normally will show a launch if it has loaded 110K or more as a general rule. It will load in Safe Mode with all add-ins cut off, and I will continue to use it in this mode until I can find a fix that will work with all of the things loaded that I want to run. Thank you for your time.