memcached does not start after multiple bucket creation/deletion

single node test run has 25 failures now all due to the fact that memcached does not seem to start anymore after multiple bucket creation/deletion

i see these errors for instance :

ERROR REPORT <0.28883.4> 2011-08-11 09:03:16
===============================================================================

ns_1@127.0.0.1:<0.28883.4>:ns_janitor:68: Bucket "default" not yet ready on ['ns_1@127.0.0.1']
{{

{2011,8,11},{9,3,16}},
{couch_info,<<"[info] [<0.28843.4>] MC tap: processing: <<\"default\">>/50331648/[dump]/4/#Port<0.15854>\n">>}}{{{2011,8,11}

,{9,3,18}},
{couch_info,<<"[info] [<0.28843.4>] MC tap: processing: <<\"default\">>/50331648/[dump]/3/#Port<0.15854>\n">>}}{{

{2011,8,11},{9,3,20}},
{couch_info,<<"[info] [<0.28843.4>] MC tap: processing: <<\"default\">>/50331648/[dump]/2/#Port<0.15854>\n">>}}{{{2011,8,11}

,{9,3,22}},
{couch_info,<<"[info] [<0.28843.4>] MC tap: processing: <<\"default\">>/50331648/[dump]/15/#Port<0.15854>\n">>}}

diag attached.

let me know if you need more information to debug

assigning to Trond to see if its bucket-engine related.