Internet explorer 8 has issuse with spybot protection/immunisation, it slows it down making it lag taking loads of cpu.
open spybot press undo button to undo immunisaton, close spybot stop resident shild, uninstall it, reboot and ie8 will run faster. make sure you have one anti virus program and at least 2 spyware/adware scanners.
i have uninstalled spybot and ie8 is much quicker now.
I have the following installed with no problems:
avg 8.5
spyware blaster
super anti spyware
malwarebytes
ccleaner
it wont be your dongle that's the problem rather a conflict of programs.
Erk, July 2009