i found that firestarter and gufw are gui's for the same firewall-ip tables. (tis why i like linux,makes my brain grow bigger-learn something everyday
)
http://ubuntuforums.org/showthread.php?t=868194&page=2#1 did you check you're os disk for errors ?
Release: Ultimate Edition 2.0 Gamers
Architecture: x86 (32 bit)
Size: 4,243,374,080 bytes
MD5SUM: 375b33937ab2070ddaee486f77c5fbfc
here threemahn tells how to check it.worth a quick look,ive downloaded distro's before,and didn't check em.they worked somewhat(which lead me to believe it was fine)until i tried certain software.....then....crap.so learn from my lesson.
viewtopic.php?f=10&t=225#2 update you're system using synaptics,reboot if needed.
#3 then play with you're mighty linux os system.add software,take software out.do what you will
like i said im not being insulting,but post back if you have already done these things