Originally Posted by jolle
Really old post, but I thought if anyone else run into this issue.
I did, and after some googling the fix was to change a setting in the NV Network driver.
"Checksum Offload" to "Disabled" took care of it.
Before that I:
Got disconnected after a few seconds in IronForge.
Got lagged out after handing in a quest, everytime..
Got alot of "Unknown Entity" messages on players and pets..
You'll still get rolling disconnects with an onboard Nvidia Lan. Go get a real pci network card, the performence difference will be astounding.