probably your version of FF - that hasn't been released yet :-[
otherwise, you will have to do some system checking... look at the
speakeasy speed test
FAQs (if there are any) and at any special settings to be made at *your end* of the connection!
If you are OK with "doing things" to your computer, take a look at this URL - lots of things to speed-up and optimize your connection there!
http://www.speedguide.net/index.php
reg
where did you get FF 1.8.0.1. This isn't an official release. Have
you checked your firewall. If you see a FF entry, then delete it, and
retry again.
--
Funny Things To Do in An Elevator: Tip #4: Stand silent and motionless
in the corner, facing the wall, without getting off.
I'd also recommend running STABLE builds.