Threads timing out

[Tom Haggie]

Hi I've got a problem where if I leave my code running for a bit ( about
1 Min)  something comes a long and deletes my thread! Specifically the
function is "scanForIdle" which does something with a heartbeat and then
shuts me down - causing an exception later when it's used and we get a
return saying it's been closed down. Is there something I am
doing or should be doing to stop this behavior - If I make the heartbeat
always zero it seems to work fine...

-*TOM*-