You should scan ur computer for virusses first.
Virusses can slow down your computer and can make your computer unstable.
After that, you have to Delete Spam files. You should use CCleaner for that.
Then if you want, you can defragment your computer to make it faster. Then you reinstall Crossfire and run it again. I hope this could work
~Donater since 19th October 2011~ ~Ex-Crossfire Minion || Resigned on 4th February 2012 ~
Also check your internet connection cause when i'm at school i also have a problem getting into games. it either loads halfway or doesn't even start without an error and i run it on my laptop which when i play CF on at home it doesn't have a problem.