Lately on my windows desktop at home, Firefox was slow to start up. Just had always wrote it off as the computer had just booted up, its windows, give it a moment. But like any good sysadmin it began to wear on me. One thing that had always bothered me was the several Java Console versions in the Add-ons Manager. They were always listed as disabled but never had the option to remove them.
Did some research and some point out to use the Java control panel to hide the java console, nope didn’t work. Considering this was the work of older versions of Java, I completely uninstalled java and reinstalled, no good either. Then I found out Firefox has a global extensions folder in Program Files and there they were. Removed them all and started Firefox with a much better snap.