You think that's bad?? AOL used to disconnect me after I left the room for five minutes---with no warning either. They would usually send a warning first, but it you didn't respond the warning, they still logged you off anyway. It was very frustrating, especially since just getting online was already an arduous task.
AOL had one trick in particular which really vexed me. When dialing-up, I became accustomed to spending an eternity bouncing from one access number to the next, trying to get through. Finally, my efforts would be repaid and I would establish a connection---or so I thought. Much to be utter disgust, I would often get a friendly message from AOL about thirty seconds later telling me that my connection had been lost and I was being "logged off." No---they couldn't tell you right away, they had to hold you in suspense. And, no, they couldn't possibly apologize for disconnecting me. As if telling me after that I'm being "logged off" after the fact isn't a waste of words!
Fortunately, my status is now "recovering AOL user." I've been AOL-free for over six months now. The DSL we have now seems to go down without warning from time to time, but at least when the internet's up, the connection is swift and painless. I don't get logged off involuntarily, and I don't have to be bombarded with advertisements and be forced to sift through heaps of spam when attempting to check my e-mail.