The system starts up fine, and for about 5 minutes (est.) things are fine. Then the system starts to get very sluggish ("choppy"): the mouse will freeze for two or three seconds, then release for about one to two seconds. I've tried using DTrace, but so far to no avail: I'm still learning DTrace and finding out what I should be looking for.
The system is an HP nc4010 Pentium M based laptop, and I installed the system using the text mode - running the GUI on a remote X server.
The CPU utilization consistently (at the height of difficulties) is almost constantly at 80-95% in system operations. There is always idle time: anywhere from 7 to 90 percent, depending on usage.
I've looked around a bit but haven't come up with anyting. No messages in messages log.
What do you recommend?