On Windows 7 Pro pc, had to system restore 4 times; twice uninstalled Avast version 5.1.889. I kept getting a com surrogate error and many of my programs stopped working: WordPerfect X4, OpenOffice 3.2, AverMedia, Firefox 3.6.13, etc. I reinstalled to version 5.1.677, which works fine and all programs working. I checked on Microsoft Answers forum and it seemed some AV had issues with this com surrogate in Windows 7.
I used the direct program update thru AVAST UI. I reinstalled version 5.1.677 from a download from download.cnet.com.
My pc is Windows 7 Pro, 64 Bit, AMD Athlon 7850 Dual core, 4 GB RAM, 500 GB HD, NVidia GEForce 8600 GT. I also use Comodo Firewall, ThreatFire, and Secunia PSI.
Any other people with this type of issue in Windows 7? My Avast Version 5.1.889 on my Windows XP Pro pc is working just fine. All programs working normal. Thanks for any input.