[chef] Upgrade caused chef client to stop

[Ash Berlin < >]

So last night all my chef clients seem to finally pick up the upgrade to chef 
0.9.14 (I guess this is when .14 got pushed to the opscode apt repo which i'm 
using)

Sadly they didn't upgrade cleanly:

[Thu, 10 Mar 2011 23:32:28 +0000] INFO: Upgrading package[chef] version from 
0.9.12+dfsg-2 to 0.9.14+dfsg-1
[Thu, 10 Mar 2011 23:32:30 +0000] FATAL: SIGTERM received, stopping
[Thu, 10 Mar 2011 23:32:30 +0000] ERROR: Running exception handlers
[Thu, 10 Mar 2011 23:32:30 +0000] ERROR: Exception handlers complete

Thats it - after that point chef stopped running.

1) Why?
2) How do i stop it from happening again? ;)

-ash