well... yes I think so there is a bug in Task Manager->Networking Tab->View->Select Columns->Check 1. Bytes Sent 2. Bytes Received 3. Bytes
so, as my computer runs 24/7 and I do alot of downloading I mean a lot!, so when the Bytes counter reaches some 4xxxxxxxxx bytes it resets and starts over again... I think the data type of the variable behind the Bytes counter is 'uint' which has limit (0 To 4,294,967,295) so, this probably is a bug which should be addressed? any patches or solutions?
Proof: (Have a Look)
More aboutnetworking bytes counter
hmmm, i don't know about a bug...maybe the limitation of the o/s by design or something, interesting though, i can't see any hotfixes or anything addressing it though
i'll check this in Vista and i doubt if its removed/fixed.
I know this is a very old thread, but I was trying to find answer for same problem. It looks like it will count to 4 GB only and resets.