Hi, I would like to ask a question about the inactive memory, a question that might be different from those already posted. It has been bothering me for quite a while. So please help! I am on a 2Ghz Macbook with 1G ram. It used to start up very quickly without any problem. But recently (probably after updated to 10.4.10) it starts up much slower. And I notice in the Activity Monitor that the Inactive Memory soars from 123m up to over 600m, and then drops and stays at around 500m, immediately after I startup the computer and before I have started ANY application! Could anyone tell me why it is so? And at the same time, whenever I turn on Opera after the startup, the little O jumps for over 20 times on the dock before it is ready to go, and for Firefox the spinning beach ball comes up ... Could anyone please help with this? Thank you in advance for suggestions!