I have been experiencing the same performance issue as discussed in the closed topic "System Very Slow After Installing Total Security 2011, performance is awful". My laptop is extremely slow when browsing the internet, whether I use Firefox or IE. Loss of speed is much less noticeable when using Microsoft Office apps. I didn't have the issue until I upgraded from BD 2010 to BD 2011. I have followed the steps you recommended for uploading the zipped folder generated by running the supporttool.exe program, and will send a PM with the appropriate links.
Details about my pc:
Dell Latitude D520, running Windows XP Pro, Service Pack 3
Intel Core 2
T5600 @ 1.83 GHz
1.99 GB RAM
I previously had BD 2010 (and I think 2009) installed and have uninstalled them. Please let me know if you need any other info. BTW, my daughter's laptop (same model/OS) and our Dell desktop (Inspiron 530) have both experienced the same serious loss of speed since installing BD Internet Security 2011.
Thanks,
Bob