Database not starting up for hot standby

I'm using PostgreSQL 9.0rc1 and can't fathom what I've missed here.  I
ran pg_start_backup() on my primary, did a filesystem backup and
restore to the standby, configured the conf files on both
appropriately and issued a pg_stop_backup() on the primary again.  I
brought the standby up but I'm getting the following in the log:

2010-09-19 12:32:35 BST LOG:  entering standby mode
2010-09-19 12:32:35 BST LOG:  redo starts at 1/2F000020
2010-09-19 12:32:35 BST LOG:  record with zero length at 1/2F0000B0
2010-09-19 12:32:35 BST LOG:  streaming replication successfully
connected to primary
2010-09-19 12:32:36 BST LOG:  incomplete startup packet
2010-09-19 12:32:36 BST FATAL:  the database system is starting up
2010-09-19 12:32:37 BST FATAL:  the database system is starting up
2010-09-19 12:32:37 BST FATAL:  the database system is starting up
2010-09-19 12:32:38 BST FATAL:  the database system is starting up
2010-09-19 12:32:38 BST FATAL:  the database system is starting up
2010-09-19 12:32:39 BST FATAL:  the database system is starting up
2010-09-19 12:32:39 BST FATAL:  the database system is starting up
2010-09-19 12:32:40 BST FATAL:  the database system is starting up
2010-09-19 12:32:40 BST FATAL:  the database system is starting up
2010-09-19 12:32:41 BST FATAL:  the database system is starting up
2010-09-19 12:32:41 BST LOG:  consistent recovery state reached at 1/30000000
2010-09-19 12:32:41 BST FATAL:  the database system is starting up
2010-09-19 12:32:41 BST LOG:  incomplete startup packet
2010-09-19 12:32:54 BST FATAL:  the database system is starting up
2010-09-19 12:35:26 BST FATAL:  the database system is starting up
2010-09-19 12:38:44 BST FATAL:  the database system is starting up

Got these appearing in the process list too:

postgres: startup process   recovering 000000010000000100000030
postgres: wal receiver process   streaming 1/300001D0

That last one changed to its current value after I issued a checkpoint
on the primary, but the first one doesn't change.

But I cannot connect to the standby as it's stuck in recovery.

The standby's recovery.conf has hot_standby set to "on" (set before
bringing online of course).

What am I not doing?

--
Thom Brown
Twitter: @darkixion
IRC (freenode): dark_ixion
Registered Linux user: #516935