Thanks! I will not freeze it. I thought it may solve the Ptolemy of the black screen I get until I press the home button.
I just noticed my post was messed up. What I meant to say is that I get that lag with LauncherPro, so I tried the fix for this problem in terminal emulator but it caused my phone to go into a boot loop. I had to do a factory reset and I noticed the lag was on the stock launcher too.