Mozilla
For a while this past Spring, Casey would build debug-code-free binaries from the Mozilla nightlies. Now, Mozilla is notoriously slow. This is basically because of the tremendous amount of debugging code that it ships with. These nightly builds of Casey’s were fast. Gloriously fast. But each had its own set of show-stopping bugs, being a nightly and all.
Under Linux on Clarence, I still have one of these nightlies installed, and it rules. I’m really enjoying the speed, but there are many bugs in it that have since been fixed. For instance, the back button works in newer builds. :) I suppose I should upgrade to a newer version, but I don’t particularly want to jump through the various hoops of building Mozilla without all the nonsense in it. I will when it gets sufficiently annoying, I suppose.