<early_flush>1</early_flush>
Notice: ob_flush(): failed to flush buffer. No buffer to flush in .modman/diehard/code/Model/Backend/Local.php on line 198
#0 [internal function]: mageCoreErrorHandler(8, 'ob_flush(): fai...', '...', 198, Array)
#1 .modman/diehard/code/Model/Backend/Local.php(198): ob_flush()
#2 app/code/core/Mage/Core/Model/Cache.php(663): Cm_Diehard_Model_Backend_Local->extractContent(false)
#3 app/code/core/Mage/Core/Model/App.php(340): Mage_Core_Model_Cache->processRequest()
#4 app/Mage.php(683): Mage_Core_Model_App->run(Array)
#5 index.php(90): Mage::run('', 'store')
#6 {main}
I haven't yet dug into this at all to see what might be causing it - just wanted to post this up quickly while I was in there.