Joined: 1 Jul 12
I lost task yafu_C111_1343367317_16_0, too many restarts due to lack of heartbeat.
The internet went down at the time it happened. I have had similar problems, though it usually leads to an error 11 (SIGSEGV). If you have any ideas why boinc would restart the task and the heartbeat would continue to not be present, I might be able to debug this (by deliberately disconnecting the internet, if necessary).
The router is usually still working fine when I have problems, but the cable modem loses its upstream connection. In some cases, neither BoincTasks nor the Boinc manager can contact the client when it happens. I suspect the OS still thinks the internet is up, and boinc gets in trouble trying to use DNS or something else that times out.
I can bring this up on Boinc's forum, but thought I would ask your opinion first.
Joined: 22 Aug 11
As far as I know the heartbeat problem is a well known problem of Boinc. You should discuss this with the Boinc developer.