I used to dread changing the domain name of a site running Drupal in a multi-site setup.  After changing the folder name all of my attached files would be broken, possibly some of my links would be broken and I would have to delve through thousands of records in the database to hopefully fix the broken files and links.  Now I don't dread it at all since I figured out I could get around all of these problems by using symbolic links.

I had to compile the pecl memcache today for work on my devel system. I already had MAMP installed so I just wanted to do a pecl install ... turns out that won't work. There's a few steps you need to do first. (Note: you must have gcc installed to get this to work. Also, I won't cover installing memcached, just compiling the pecl memcache extension and tying it into php.)