Thread:Project:Support desk/PHP timeout after upgrading MW

I just upgraded from MW 1.18 to 1.21 (no other changes). My user page was perhaps complex to render, containing large tables and repeated use of an image in the cells. However I didn't have any problems loading it in 1.18. Now, in 1.21 it is timing out in PHP (30 seconds). Previously the page would load in under 10 seconds. PHP is 5.3.5 and MySQL 5.0.37.