Firefox refuses to load youtube vids (HTML5 or no) yet plays liveleak; flash is up to date and the adobe page flash tester animation thingy works; firefox won't let me clear cache etc (stops responding).
Firefox refuses to load youtube vids (HTML5 or no) yet plays liveleak; flash is up to date and the adobe page flash tester animation thingy works; firefox won't let me clear cache etc (stops responding).
Alla svar (3)
Clearing the cache can take a few minutes which might give the impression that it has stopped responding.
The most likely candidate though is AVG Safe Search which you appear to have installed.
Try running Firefox in Diagnose Firefox issues using Troubleshoot Mode. If it functions correctly in that configuration than one or more of your extensions is responsible.
Also, I see a number of old Java Consoles in your system specs. Maintaining old plugins exposes your system to vulnerabilities associated with those older versions. Disable them by clicking the Firefox button, go to Add-ons, then Plugins and disable them in there.
Create a new profile as a test to check if your current profile is causing the problems.
See:
If that new profile works then you can transfer some files from the old profile to that new profile (be careful not to copy corrupted files)
See:
Cheers for the help! All fixed. It was one of my pluggins making a mess of things. All fixed.