I just installed Webroot firewall, it says that i have comodo firewall installed but i removed it a while back ago, maybe not a clean uninstallation?
So i just went along with the installation, after the computer is restarted, some of the icons in the taskbar were missing(including avast's) and internet stopped working.
so i uninstalled it, restarted and icons were still missing. Had to use system restore.