Comment #27 on issue 22978 by thomas536: Facebook pages showup blank  
sometimes
http://code.google.com/p/chromium/issues/detail?id=22978

I don't know if anywhere else on the intarwebs is having a technical  
discussion about
this, so I'll post some findings here.  In checking my squid logs, it looks  
like
basically facebook has a misbehaving datacenter (fields are number of  
requests --- I
was hitting refresh constantly, the response size in bytes, and the  
squid "hierarchy
code"):

[r...@www squid3]# grep http://www.facebook.com/home.php? access.log |  
awk '{ if ( $5
< 3000 ) {print $5, $9} }' | sort | uniq -c
     171 1582 DIRECT/69.63.181.11
     470 1582 DIRECT/69.63.181.12
      90 1582 DIRECT/69.63.181.15
      84 1582 DIRECT/69.63.181.16
       4 1601 DIRECT/69.63.184.30
       2 1601 DIRECT/69.63.186.30
       2 1601 DIRECT/69.63.186.38

I didn't realize that dns for www.facebook.com was getting rotated every  
30s, but it
would appear that bad responses from the above top 4 ips, coupled with  
(possibly aggressive) dns caching by a proxy might cause the behavior. Once  
my squid rolls off
of the above ips to the next dns entry, an expected response is returned.

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