Downloaded and installed Avast! 5.0 free version, and the interface informed me virus definitions are out of date. Attempted to update and received error invalid file signature and to try again. Error repeats. What to do? Running WinXP SP3, IE 8, Firefox 3.6.
Read a previous post on this issue. Suggestions worked. Which where to download uninstall utility, and latest version of avast. Uninstall avast from control panel, and then run utility. Reboot and install new version of avast. Thanks.
You’re welcome. Feel free to come back any time you need help or just to change experiences 8)