I just upgraded to the latest version of Wordpress (2.1.3).
Before the upgrade, I started to get strange errors (admin screens not painting correctly). And when I attempted the upgrade, I received this error:
Fatal error: Allowed memory size of 8388608 bytes exhausted (tried to allocate 71797 bytes) in /[path]/upgrade.php on line 155
I believe the memory leak is originating from Arne Brachhold’s Google Sitemaps plugin. To be fair, I was running 2.7.1 (a reasonably old version). Will upgrade and hope the problem goes away.