Site upgrade

I have just upgraded to WordPress 1.5.1.2. The site seems to be working as expected but I'm yet to figure out what advantages this upgrade has given me.

Since the photo albums are custom built I had to make a few quick hacks to get it to work properly and I have no confidence in the photo section's stability. If you find anything stupid happening let me know. I'm going to be doing a MAJOR upgrade to the photo album after this semester finishes at Uni.