You have some serious query/caching issues. Times vary but slow nonetheless.
Finder -> My Bookmarks
Page generated in 26.1996 seconds with 8 database queries and 7 memcached requests using 6.01MB of memory
Page generated in 16.5247 seconds with 5 database queries and 6 memcached requests using 4.71MB of memory
Latest Post Comments
Page generated in 47.6937 seconds with 5 database queries and 32 memcached requests using 4.92MB of memory
While posting this to your shoutbox earlier I noticed that my profile dropdown and the finder dropdown aren't working in the shoutbox.