[squid-users] cache.log Warnings

Just curious if these are anything that I should really worry about,
or just need to keep an eye on my log file?

2014/02/16 03:08:01| helperOpenServers: Starting 40/40
'squid_ldap_auth' processes
2014/02/16 03:08:01| helperOpenServers: Starting 5/5
'squid_ldap_group' processes
2014/02/17 08:59:13| TunnelStateData::Connection::error: FD 747:
read/write failure: (32) Broken pipe
2014/02/17 09:46:05| squidaio_queue_request: WARNING - Queue congestion
2014/02/17 10:30:41| squidaio_queue_request: WARNING - Queue congestion
2014/02/17 11:38:04| squidaio_queue_request: WARNING - Queue congestion
2014/02/17 12:57:40| TunnelStateData::Connection::error: FD 1298:
read/write failure: (110) Connection timed out
2014/02/17 13:08:00| squidaio_queue_request: WARNING - Queue congestion
2014/02/17 14:03:09| TunnelStateData::Connection::error: FD 1000:
read/write failure: (32) Broken pipe
2014/02/17 14:07:12| squidaio_queue_request: WARNING - Queue congestion

I am assuming that I may just need a faster drive? My network has
been busing right along today and I have not seen any slowness at all.

Thanks for any suggestions.

-- 
Scott Mayo