I'm running AVG7.5 at the moment. When AVG 8.0 came out I upgraded and found that FS2004 VFR Scenery would not load, or if it did, it was extremely slow. After discussing it here I went back to 7.5 and everything was OK.
Now it looks like I will have to replace 7.5, does anyone know if 8.5 has solved my problem. If not I will try Avast or Avira