It was suggested to me by by tech support to downgrade to PHP 4.
I have not downgraded my domains to PHP4 as I have never used PHP4 (i went straight into PHP5).
I really cannot go back to PHP4 because I am using a shedload of the new PHP 5 only functions and that would mean I might as well throw my code away and start from scratch - it took me a few months to write my code.
From the research that I have done and the debuging I have found that there are memory problems with str_ireplace functions (in 5.2.1) and other things.
In google, just do a search for "5.2.1" and "zend_mm_heap corrupted" and there is a lot of bugs listed.
So, would anyone mind if dreamhost rolled back to a more stable version of php 5 (pretty please) or i'll cross my fingers and wait for a new stable version of php 5 whilst my web devopment business goes bust ?
JUST SAY NO TO PHP 5.2.1 !!!!