starts in full screen

Binary package hint: firefox-3.0

 Firefox just started opening in something like full screen mode (but not exactly full screen mode). To be able remove this full screen I have to go under "view" "full screen" then click on the square minimize button and minimize Firefox. How do I return to startup in a normal mode? I can send screenshots if necessary.

ProblemType: Bug
Architecture: i386
DistroRelease: Ubuntu 8.10
Package: firefox-3.0 3.0.7+nobinonly-0ubuntu0.8.10.1
ProcEnviron:
 PATH=/home/username/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: firefox-3.0
Uname: Linux 2.6.27-11-generic i686