Description of problem:
The .624 kernel has this questionable feature that read for files on
disk can return EAGAIN.  squid breaks badly if this happens since this
is not considered as a recoverable error.  The attached patch seems to
fix it.

Version-Release number of selected component (if applicable):
squid-2.5.STABLE6-2

How reproducible:
always

Steps to Reproduce:
1.start squid on .624 kernel
2.
3.
  
Actual results:
bails out with errors about not being able to read
/etc/squid/errors/ERR_READ_TIMEOUT or a similar file.

Expected results:
Should start up.

Additional iI'll attach a patch which should fix it.  Works for me at
least.