Did you do a clean install of avast 5 or did you install it over avast 4.8 ?
If install over 4.8, try a clean reinstall:
- Download the latest version of avast, 5.0.462
http://www.avast.com/free-antivirus-download and save it to your HDD, somewhere you can find it again (if you didn't save the one you downloaded). Use that when you reinstall.
Download the avast! Uninstall Utility,
find it here ensure you get the version5 one (it has uninstall tools for both 4.8 and 5.0), aswClear5.exe and save it to your HDD.
- 1. Now uninstall (using add remove programs, if you can't do that start from the next step), reboot.
- 2. run the avast! Uninstall Utility from safe mode, first for 4.8 if previously installed and then for 5.0, once complete reboot into normal mode.
- 3. install the latest version, reboot.
That's me for the night, almost 3.30am here.