I have a 2950 switch in a remote site that has 2 3Com 8 port switches connected to it to secondary rooms. I keep getting notified that these switches stop working. I checked the 2950 and portfast was enabled, I issued "no spanning-tree portfast" on both ports, saved the config.
A couple of days later (after a power outage) the same thing happened. I logged in, and "spanning-tree portfast" was back on both interfaces!
I've repeatedly removed this from the config and it keeps coming back. I don't understand why.