[squid-users] blocking on requests in swap

I've upgraded from 3.0.19 to 3.2.1 due to bug 2305. But it seems I
have simply traded one problem for another.

The problem that I am having is that requesting some URLs from squid
leaves the client waiting, forever. For example:

XXX

If I force a cache reload with squidclient's "-r" the URL will fetch
with no problem.

While squid has taken the request and left the client blocked, some
debug shows the following:

2012/09/28 08:57:26.717| client_side_request.cc(1547) doCallouts: Doing clientInterpretRequestHeaders()
2012/09/28 08:57:26.717| client_side_request.cc(138) ~ClientRequestContext: 0x7f4fe0d25fd8 ClientRequestContext destructed
2012/09/28 08:57:26.717| client_side_request.cc(1603) doCallouts: calling processRequest()
2012/09/28 08:57:26.717| clientStreamRead: Calling 1 with cbdata 0x7f4fe0a75420 from node 0x7f4fe0a75458
2012/09/28 08:57:26.717| storeGet: looking up D4679455D49A4795BBAA7B9AFDE29CF7
2012/09/28 08:57:26.717| store_dir.cc(741) get: got in-transit entry: 229039_at_0=0/0/0/2
2012/09/28 08:57:26.717| clientProcessRequest2: default HIT
2012/09/28 08:57:26.717| StoreEntry::lock: key 'D4679455D49A4795BBAA7B9AFDE29CF7' count=3
2012/09/28 08:57:26.717| UFSSwapDir::reference: referencing 0x7f4fe06851e0 0/229039
2012/09/28 08:57:26.717| store_client::copy: D4679455D49A4795BBAA7B9AFDE29CF7, from 0, for length 4096, cb 1, cbdata 0x7f4fe0a74368

Any ideas as to how to resolve this, short of just dumping my entire
cache and starting from fresh?

Cheers,
b.