Suddenly capped before until restart

[Ryouko 0]

I turn on my computer and everything uploads and downloads very fast. The school has us wired with 10Mb/s lines. After a while of being connected to the hub, my speeds will suddenly drop to close to 0. (under 10kb/s). This doesn't just affect apex dc, it brings any website to a crawl, and when I manually ping a site, it times out. When I bring up the graph of the network traffic, it has this pattern to it:

which may help you guys figure out my problem, or may not. Suspiciously, the last time I was "capped" it happened just as my total uploaded+ total downloaded was 10 gigs I have tried releasing and renewing my Ip, but that doesn't fix it, and nothing else is connected to the internet (used netstat to check). The only thing I have found that fixes the problem is restarting my computer. Does anyone have any ideas on things I can try?

edit:I think the 10 gigs was just a coincidence ( since it was actually 10.11 GB), it just happened again, but this time, the total was 5.49 gigs total, but it was running for exactly half an hour +- 30 seconds the whole time uploading/downloading very fast. Ill restart again and try to get more info.

[Satan 1]

You mention your on a school network. They are capping it for a reason, they dont want you using P2P to flood their network. So the reasing behind it is not a fault with DC, more likely a simply ISP or internal school cap.