I upgraded from B54 when I installed Leopard, but there's a major shortcoming. Previously, I could find a file by typing in letters that were sequential in the file name, but I could skip letters. In B56, I have to type in letter sequentially.
EX// rep conference interest list.xls In B54, I could launch this with "rep int" In B56, I have to type "rep con" This kills a lot of my handy shortcuts. MBP OS X 10.5.6 QS B56 (in process of downgrading to B54)
