A few days ago I was running at about 12 mbps then suddenly it dropped to 24 kbps. From cable speed to less than dial up in a matter of minutes! I use Optimum Online cable service LAN connection on Windows XP. We tried everything we could think of to fix it. First I ran spyware, virus, and registry checks to see if I got anything nasty. Nothing. Tried basic stuff like deleting temp files, cookies, history. Didn't work. So after that we tried calling the ISP and they said we got flagged for using up too much bandwidth but they said they'd have it fixed by the morning. 2 days later, same slow speed. So we called again and they walked us through some solutions, none of which worked, most of which we already tried. They told us our ethernet cable might be malfunctioning so I bought a new one this morning and it didn't help a single bit. I tried system restoring to a few days before the internet stopped working, but it said the restore could not be completed. I'm out of ideas for fixing this problem except reformatting, or taking it in to be repaired, neither of which I'm too crazy about doing. So it'd be a big help if I could get a detailed walkthrough maybe, I don't really know how do any diagnostics to see how it should be functioning and how it is. Anything you can give me would be greatly appreciated!