Before you have them change all that, just ask them to restart the server. Are you sure you were just doing an install and not instead doing an import?
Often code can create connections to the database and do things like load a memo field. Many different things can go wrong at that point and the memory that is allocated for the memo field creation is not released.
That's where I've run into this. My solution was to better bullet proof my code, reduce the size of the default memo field load and to restart apache when I ran out of memory.
ACK THIS IS A 5 MONTH OLD RESURECTED THREAD. OK, I'm not going to erase all that, BUT people that continue to post should realize this all might be moot now.