Since you uninstalled all packages and it did not work verty well, I suggest restarting fresh… I did it yesterday because everything was screwed up badly, pf wouldnt event load the webconfigurator.
Download the ISO file, burn and reinstall. Then upgrade via either webconfigurator -> firmware upgrade, or SSH. Just to give you an idea how easy this can be, I reinstalled 1.2.3, upgraded to 2.0RC1 then upgraded to 2.0RC2 and reinstalled all packages (squid, squidguard, snort, country block, ip block, HAVP A/V, Cron, ntop) from my iphone via Wifi! :)