I added 384 Mb RAM to this little gem tonight (replacing a 128 with a 512) and so far things are zippier.
I was really getting frustrated with the boggy slowdowns after a couple of days or a week or uptime as I opened more and more applications. Even logging out wouldn’t solve it, and rebooting was a temporary fix. For US$100, I was able to, I hope, solve the problem. Only time and a vigilant watch on my swap files will tell.
white:/var/vm paul$ ls -l /var/vm
total 131072
drwx–x–x 18 root wheel 612 26 Nov 09:09 app_profile
-rw——T 1 root wheel 67108864 1 Dec 20:22 swapfile0
An easy fix, too: pop off the keyboard and the instructions are right in front of you.