Mouse Gestures Redox

I especially like being able to keep my hand on the mouse and navigate/control the browser. By far, the most frequently used gesture is Back, which is defined as a RtClick-LeftMove. That sounds more complicated than it is, really.

All of the gestures need a right click and some motion, usually defined by a clock direction, so the one described above would be listed as L9. Easy peasy!

Mine vary at different times: Here's what I've got now...

Adblock Filter.G Updater
Adblock Plus
Adblock Plus: Element Hiding Helper
Better Youtube
BugMeNot
Closy
Download Statusbar
Duplicate Tab
FireFTP
Gmail Manager
Greasemonkey
Nuke Anything Enhanced
Quick Restart
Simple RSS Reader
Tab Clicking Options
URL Fixer

AdBlock Plus
BBCodeXtra
BugMeNot
Clear Cache Button
CoLT (copies not just links but also their text, and does it in HTML, BBedit and Wikicode)
CookieSafe
Download Statusbar
DownloadHelper (lifts nearly any video from nearly any site and converts Flash videos to other formats)
Email This!
Flagfox (displays the flag of the country hosting the current web site)
Forecastfox
Google Gears
Greasemonkey
Novell Moonlight (open-source implementation of MS Silverlight, run on Linux, not sure about others)
Print/Print Preview (lets me use the Mozilla Suite's print/preview button)
RUWT? toolbar (got scores?)
ScribeFire
Text Formatting Toolbar (gives me a button bar with formatting commands for places like this)
TinyURL Creator
US Department of Homeland Insecurity Idiocy Level

Would that be why some sites flicker badly in Firefox? I have been trying it out on my new comp. Everything is fine except sometimes the browser screen flickers up and down.