I'm using Windows XP SP3 32bit and Bitdefender IS 2010.
After reading lots about AIS and using AIS 5 in virtual machine for a month, I decided to switch from Bitdefender to Avast:
I uninstalled Bitdefender > restarted > used Bit's remove tool > restarted > ran AIS 6 setup file, but then nothing appeared.
I ran it again and found out that the setup file only extracted files to system's temp folder and started avast.setup process. The problem is that this process did nothing (CPU: 0%, Mem Usage: 92K, VM Size: 144K, Handles: 2, Threads: 1; those number didn't change for more than 10 minutes, then I manually ended the process).
After searching for solutions in this forum, I've tried these: restart and try install again, redownload the setup file (which checksum is identical to the old file), run AIS 5 setup file (I had hoped it would install normally as in the virtual machine, then I could update it to version 6); before each try I deleted all temp files (just to make sure) but the same thing happened everytime.
Now I'm using Bitdefender again and typing this post. Could anyone help me to find the problem and fix it?
PS: Honestly, I didn't think I would encounter this much trouble so I was pretty surprised. I originally wanted to upgrade to Bitdefender 2011 but it has lots of BSOD errors, so I checked other security softwares. I chose Avast because it works well and fast in my virtual machine and it suits me best(after trying Avira, GDATA, Kaspersky and Norton). I hope this will not be my first and last time (or try?) using Avast in my daily works.
Thank you very much for your help.