back for more punishment

i've installed WP 2.0.2. bleh. given a choice between not having pingbacks and getting:

Warning: (null)() [ref.outcontrol]: output handler 'ob_gzhandler' cannot be used twice in Unknown on line 0

at the end of post pages…. i choose the error. it looks ugly, but

  1. it stands a chance of being fixed
  2. it doesn't affect the basic functioning of my blog.

i have tried this php hack, unsuccessfully.

so far, extended live archives are broken, i have no idea why. i used 24fightingchickens' trick of reverting permalinks and that didn't help. also, i had the same problem with needing to log out and delete /wp-content/cache before i could use the admin interface.

UPDATE: i actually managed to properly config a testblog (after a good half dozen tries with different versions of WP2.0.x and various betas).  the testblog doesn't show the error.  maybe it's my fault.