Rebalance failed: timeout

Gathering full logs, but the console is reporting this:
===============================================================
Bucket "default" loaded on node 'ns_1@172.29.150.140' in 0 seconds. ns_memcached001 13:48:25 - Fri Feb 18, 2011

Control connection to memcached on 'ns_1@172.29.150.140' disconnected: {{badmatch,
{error,
timeout}},
[

{mc_client_binary, cmd_binary_vocal_recv, 5}, {mc_client_binary, delete_vbucket, 2}, {ns_memcached, handle_call, 3}, {gen_server, handle_msg, 5}, {proc_lib, init_p_do_apply, 3}]} ns_memcached004 13:48:22 - Fri Feb 18, 2011

Port server vbucketmigrator on node 'ns_1@172.29.150.147' exited with status 70. Restarting. Messages: Authenticated towards: {Sock 172.29.150.147:11210}
Starting to move bucket 24
Did not move enough vbuckets in takeover: 0/1 ns_port_server000 13:48:16 - Fri Feb 18, 2011

Bucket "default" loaded on node 'ns_1@172.29.16.9' in 0 seconds. ns_memcached001 13:47:03 - Fri Feb 18, 2011
Rebalance exited with reason {badmatch,{error,timeout,
[{mc_client_binary,cmd_binary_vocal_recv,5}, {mc_client_binary,delete_vbucket,2}, {ns_memcached,handle_call,3}, {gen_server,handle_msg,5}, {proc_lib,init_p_do_apply,3}]},
{gen_server,call,
[{'ns_memcached-default','ns_1@172.29.16.9'}, {delete_vbucket,21},
30000]}}
ns_orchestrator002 13:47:03 - Fri Feb 18, 2011

Control connection to memcached on 'ns_1@172.29.16.9' disconnected: {{badmatch,
{error,
timeout}},
[{mc_client_binary, cmd_binary_vocal_recv, 5}

,

{mc_client_binary, delete_vbucket, 2}

,

{ns_memcached, handle_call, 3}

,

{gen_server, handle_msg, 5}

,

{proc_lib, init_p_do_apply, 3}

]} ns_memcached004 13:47:03 - Fri Feb 18, 2011

Starting rebalance, KeepNodes = ['ns_1@172.29.150.130','ns_1@172.29.150.135',
'ns_1@172.29.150.137','ns_1@172.29.150.139',
'ns_1@172.29.150.140','ns_1@172.29.150.141',
'ns_1@172.29.150.147','ns_1@172.29.150.3',
'ns_1@172.29.16.9'], EjectNodes = []