HTTP Slowdown (3.0.14.276)

This is a follow-up bug report to the thread created here:
https://forums.comodo.com/empty-t17051.0.html

This is the x64 version on Windows Vista Ultimate.

Notable software:
Comodo 3.0.14.276
ESET NOD32 AV 3.0.566.0
Acronis TrueImage
O&O Defrag
All Vista updates
Games (Steam, Crysis, etc)
Adobe CS3/Office 2007

Notable Hardware:
CPU: Q6600 [ at ] 3.5GHz
RAM: 5GB 380Mhz 3-4-4-10
HDD: OS: 320x2 in RAID-0, Storage: 500x4 in RAID-5 (Onboard intel raid controller)
VIDEO: ATI x1900GT