I have just upgraded to Extreme and it went well for a couple of days and then it has slowed to a crawl. I am using a 3546 and I have spend hours on the phone with Bellsouth. I went back to my old 3220 and got great speed, but the power supply is bad on it and it drops out. The 3546 just does not have any speed on the upload side. Any ideas ???
Assumnig you are still slow, what is your upstream Noise Margin at? Does a re-set of the 3546 fix it? If so, check out this thread (»Need some help from the Cayman gurus!!) and add your own stats. What you indicate "a few days of running fine and then problems" sounds very much like the decaying noise margin many other 3546 are seeing on higher speed connections.
