My DSL was very flaky for about two months, with an outage of over 12 hours and another over 36 hours (PacBell lines were responsible). It's been pretty decent since then, with outages of no more than a few minutes (noticed one today).

I'll be on a new DSL service in a week, but it'll still be PacBell lines.

PacBell is a division of SBC (Southern Bell).