Odd INN hanging problem

[Nathan]

Hi,

I've just had an odd problem with INN hanging. It still accepted tcp 
connections, however upon connect did not send it's usual header and 
would just hang.

Log's leading up to it (Hostnames are replbackup_serverd with feed1, 
feed2, this_server and backup_server :p) :

Feb  1 12:59:49 this_server innfeed[18327]: feed1 checkpoint seconds 
5400 offered 181 accepted 39 refused 142 rejected 0 missing 0 accsize 658
60 rejsize 0 spooled 0 on_close 0 unspooled 0 deferred 0/0.0 requeued 0 
queue 0.0/200:100,0,0,0,0,0
Feb  1 12:59:50 this_server innfeed[18327]: ME articles active 0 bytes 0
Feb  1 12:59:50 this_server innfeed[18327]: ME articles total 35 bytes 0
Feb  1 13:04:49 this_server innfeed[18327]: backup_server checkpoint 
seconds 5400 spooled 260 on_close 24 sleeping 236
Feb  1 13:05:19 this_server innfeed[18327]: feed1:0 idle tearing down 
connection
Feb  1 13:05:19 this_server innfeed[18327]: feed1:0 final seconds 5730 
offered 181 accepted 39 refused 142 rejected 0 accsize 65860 rejsize 0
Feb  1 13:05:19 this_server innfeed[18327]: feed1 final seconds 5730 
offered 181 accepted 39 refused 142 rejected 0 missing 0 accsize 65860 re
jsize 0 spooled 0 on_close 0 unspooled 0 deferred 0/0.0 requeued 0 queue 
0.0/200:100,0,0,0,0,0
Feb  1 13:07:50 this_server innfeed[18327]: feed2 checkpoint seconds 600 
offered 0 accepted 0 refused 0 rejected 0 missing 0 accsize 0 rejsize 0 
spool
ed 0 on_close 0 unspooled 0 deferred 0/0.0 requeued 0 queue 
0.0/200:100,0,0,0,0,0
Feb  1 13:07:50 this_server innfeed[18327]: feed2:0 idle tearing down 
connection
Feb  1 13:07:50 this_server innfeed[18327]: feed2:0 final seconds 600 
offered 0 accepted 0 refused 0 rejected 0 accsize 0 rejsize 0
Feb  1 13:07:50 this_server innfeed[18327]: feed2 final seconds 600 
offered 0 accepted 0 refused 0 rejected 0 missing 0 accsize 0 rejsize 0 
spooled 0
on_close 0 unspooled 0 deferred 0/0.0 requeued 0 queue 0.0/200:100,0,0,0,0,0
Feb  1 13:09:50 this_server innfeed[18327]: ME articles active 0 bytes 0
Feb  1 13:09:50 this_server innfeed[18327]: ME articles total 0 bytes 0
Feb  1 13:13:19 this_server innfeed[18327]: ace:0 cxnsleep 
non-responsive connection
Feb  1 13:14:49 this_server innfeed[18327]: backup_server checkpoint 
seconds 6000 spooled 260 on_close 24 sleeping 236
Feb  1 13:19:50 this_server innfeed[18327]: ME articles active 0 bytes 0
Feb  1 13:19:50 this_server innfeed[18327]: ME articles total 0 bytes 0
Feb  1 13:24:49 this_server innfeed[18327]: backup_server checkpoint 
seconds 6600 spooled 260 on_close 24 sleeping 236

Anyone know what would cause that "idle tearing down connection" message 
and how to prevent it?

Thanks,
Nathan