I Have this problem Too but I Don't use trafficload.
Here are my specs:
Nvidia GeForce GT440.
8 GB Of RAM.
CPU Intel Core i5-2400 CPU @ 3.10 GHz 3.40 GHz
OS Windows 7 Ultimate SP1
Any one know how to fix it I have dig of all of the internet I Have found a commandline but that doesn't help too much.