Avast 4 assorted glitches

Recently did WinXP SP2 System Restore cuz system had been slowing. (Did restore 5 months ago w/o glitches). After Restore Norton AntiVirus 2004 was disabled. Googled the problem and learned of array of problems with NAV. Uninstalled NAV and installed latest Avast! 4 Home. Generally the system seems ok but there are odd glitches. EG: EZPix 5.1 (a photo managment/viewing program) now loads folders and photos VERY slowly (but not when Avast is off) but otherwise seems normal. Photo loading with Win XP is unaffected. Also some internet glitches. EG. Sometimes material doesn’t download on Mozilla Firefox (no response to clicking on download) but downloads via IE. Suggestions??

  1. NAV is harder to get rid of that many viruses:
    Another link worth looking at which is a program removal tool, which can remove a number of different Norton Programs:
    Removing your Norton program using SymNRT

  2. What is the sensitivity setting of Standard Shield? - Normal wouldn’t scan image/media files those considered a lessor risk, High would scan all files.

What is your firewall?