Is the font problem throughout your entire Avast GUI or only on the main Summary page?
Have you tried an Avast Repair?
- Go to Control Panel > Add/Remove Programs > Avast Antivirus > Remove.
- Then choose Repair function in the pop-up window (Repair). Reboot.
If this does not work, then I suggest an uninstall and
clean install of Avast:
1. Save a copy of newest version of Avast (5.0.677) for the version you need and save it to your HDD:
Free –
http://www.avast.com/free-antivirus-download#tab42. Download the Avast Uninstall Utility, aswClear5.exe
http://www.avast.com/uninstall-utility and save it to your HDD (it has uninstall tools for both 4.0 and 5.0).
If you used a prior version of Avast on this machine, run the Tool for 5.0 and the other version at this time.
3. Disconnect from the Internet at this time.
4. Boot into
Safe Mode (hit F8 repeatedly) and run the Avast Uninstall Tool.
5.
Reboot twice.
6. Install the newest version of Avast and
reboot.
7. Get Internet access and update Avast definitions.
8. Register your copy or add the license key for Free.
Free –
http://www.avast.com/registration-free-antivirus.phpLet me know if this works.