I switched to Mac from Windows about four months ago and except for Leopard it's been pretty smooth. However, I've recently setup Eclipse on OS X and find that all of the builds take a lot longer to complete... for example, one of my projects takes 20 seconds on the Mac vs. 7 seconds on Windows. The Windows machine is actually not even spec'd as well as the Mac... the Windows machine is only a 2GB 2.16GHz Core Duo whereas the Mac is a MBP 4GB 2.4GHZ Core 2 Duo. Any ideas? I've already increased the memory for Eclipse (heap settings in eclipse.ini) to 768M which is 3x the heap given to the Windows implementation.