Here we go again. The typical symptom are the same as the last two lockups:

Can’t put Leopard into sleep mode from the Menu or Expose
When I reopen my MacBook and I don’t login in right away the login screen disappears and the only way to get it back is to close the lid again, wait and reopen and quickly login.
Leopard won’t shutdown. I have to hold down the power button.


There appears to be a new Mac OS X 10.5.4 Leopard update tonight, which some have suggested will correct the problem. I am hoping for the best.