I am having the exact same problem. I just uninstalled and reinstalled, rebooting after each, and I cannot get the Resident Protection to stay enabled, so I do not have the icons in the sys tray.
I am running XP, pentium 4, 3 gz laptop. I had installed avast on my personal pc (the laptop is a friends), without any of these problems, so I am at a loss. Any help is appreciated.
Thanks.