Disable Adblock.
Notice how much faster webpages load.
Apparently, load times are heavily degraded with a blacklist, because Adblock has to check through it's entire list for everything you load.
I noticed a major increase in Firefox's speed right away.
The ads may be back, but at least my speed is 2-3x faster.
Worth the trade off in my opinion.
Also, if you have "Spyware Blaster", remove the blacklist of websites it places. Firefox should also benefit in speed from that too.
Good luck
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