I have a June 2009 MBP 2.8. It's a great machine. But Finale 2009, which I am forced to use for work, runs slow as hell. Undo is slow. There is lag on everything. Even the ****ing cursor lags. It is the most frequent cause for swearing in my daily life. I'm still running Leopard. Maybe SL would help, but I can't switch over until a real 10.6 patch for ProTools LE comes out. Any ideas? I'm willing to spend money.