What makes you say the download speed is OK if pages are loading slowly?
If your upload speed is limited to 1kb/s then this is not sufficient bandwidth to accommodate the ACK packets to maintain good download speed. In other words, a server serving TCP packets will slow down its rate of sending if it is not getting receipt acknowledgments from the client (you). The upload bandwidth requirement to sustain a download will vary according to the type of traffic, but I've typically observed a 2.5% reverse-direction traffic for any transfer. Thus, if your upload is truly limited to 8 kbps, then your download is not likely to sustain more than about 1/.025=40kb/s.
As markb suggested, try disabling the traffic shaper. If that corrects the problem, re-enable it and add your pipes, queues, and rules stepwise to try to catch the problem entry.
db
|