Auto character rollback?

[Baajikiil]

This still seems very odd (two+ hours without a single save, and none on exit?)

This is uncommon, but not unheard of. I've had the same thing happen a handful of times since D2 was released. Some players advocate save and exiting after finding a particularly rare item, to try to force the save. Sometimes even that won't do it. I've lost upwards of 4 hours(and 3 acts) before. Just have to grin and bare it I think.

I'm thankful it doesn't happen often.