A little over a year ago I picked up a Power Mac 6500/275 on clearance. I bought it as is, so I don't even know what kind of internal modem it has - just that it's 36K. Up until recently, my internet sessions were noticebly snappier than most Pentium II / 56K hook-ups I've seen.
About a month ago, the internet through-put suddenly and inexplicably crawled to a near halt. Remote Access shows a nominal connection rate of 36K or 38K, but everything - ftp, http, newsgroups, e-mail - actually downloads at about 250 BYTES/sec, sometimes even less. Occasionally after an hour or two connected at this ridiculously slow rate, all of a sudden downloads will speed up - but not by much (the most 14K).
I tried getting another ISP, replacing all the DNS settings, and it made no difference; neither did performing a clean install of the OS (8.6).
Any idea what might be causing this? (Otherwise, my Mac is performing no differently than before.) I've been forced to switch to text-only browsing until I can figure this out.