>>1490585I got this from the pastebin, it might help.
Q: Firefox/my application window is weird looking/overlapping and has a flickering bar. What do?
A: Unload/disable/uncheck/toggle bbleanskin under your configuration.
(settings>config>bbleanskin>toggle skin)
(settings>config>plugins>load/unload>bbleanskin)
If you still want the skin enabled, do the following:
Put these in your Exclusions for firefox/nightly:
"firefox.exe"
"xul.dll:MozillaHiddenWindowClass"
"xul.dll:MozillaWindowClass"
For Google Chrome, put: "chrome.exe"
To turn bbleanskin off permanently, you can manually comment it out in your exclusions (blackbox>bbleanskin>edit exclusions to open the .rc). Just put a "#" in front of "plugins\bbLeanSkin\bbLeanSkin.dll". You can always uncomment it later if needed.
Otherwise read this guide and see what you can learn.
http://pastebin.com/VaP78mPj 
