When I first got the service, it was practically the same as when I had it before: reasonably fast internet that I was definitely satisfied with. But for two or three months now, speeds have dropped down to barely a crawl. When before I could watch a YouTube video just by clicking on the link leading to its page, now I have to pause the video for a few minutes (even hours, depending on the length) to let it 'buffer' so that I can watch it without it stopping every three or four seconds to load.
Customer service has been polite, but unhelpful. All that they suggest is powercycling the modem and rebooting the computer (which I've done numerous times), checking the filters and phone cables (I've replaced both, to no avail), and scanning for viruses and other malware (which I've also done several times).
At times, the connection feels slower than dialup, and I can't work with subdialup speeds.
I would appreciate any help, and thank you in advance.
I have run AVG Antivirus, Spybot Search and Destroy, Ad-Aware, and SUPERAntiSpyware, but no improvement.
A speed test at http://www.speakeasy.net/speedtest/ says my download speed is 76 kbps, and my upload speed is 431 kbps.
HJT log removed
If there is any other information I should provide that could be useful, please let me know.
Again, thank you for your help.