[squid-users] Extremely high 'Median response time' warnings

I'm running squid/2.6.STABLE6 on a RHEL5.2 system, on a Dell PowerEdge 1750
with 2Gb memory, dual CPUs, and a fast SCSI disk dedicated to the cache.

At night - times when the load should be down around zero - I'm seeing the
following response time messages:

Jul 12 16:46:43 saratoga.denmantire.com squid[9326]: WARNING: Median
response time is 57448 milliseconds
Jul 12 16:47:43 saratoga.denmantire.com squid[9326]: WARNING: Median
response time is 57448 milliseconds
Jul 12 16:48:43 saratoga.denmantire.com squid[9326]: WARNING: Median
response time is 57448 milliseconds
Jul 12 16:49:43 saratoga.denmantire.com squid[9326]: WARNING: Median
response time is 57448 milliseconds
Jul 12 16:50:43 saratoga.denmantire.com squid[9326]: WARNING: Median
response time is 57448 milliseconds
Jul 12 16:51:43 saratoga.denmantire.com squid[9326]: WARNING: Median
response time is 57448 milliseconds
Jul 12 17:26:43 saratoga.denmantire.com squid[9326]: WARNING: Median
response time is 57448 milliseconds
Jul 12 17:27:43 saratoga.denmantire.com squid[9326]: WARNING: Median
response time is 57448 milliseconds

I've logged on and tried browsing, and response seemed positively zippy.
I'd think I'd notice a one minute response time.

Where is this statistic coming from? I know I could disable it, but I'm
curious about why squid thinks my performance is this bad.

-- 
Tim Boyer 
Denman Tire Corporation
tim_at_denmantire.com