I noticed a problem in 10.2.4 inasmuch as my system became totally, totally unstable... (Dual 867, 700+MB RAM).
I had so much Modem trouble that all I had to do was move the mouse over the 'internet connect' button, and I became acquainted with the multiple language kernal panic screen...
In the end I reinstalled 10.2 over .2.4... however it didn't solve the problems, and I have had to do a complete reinstall from the ground up...
I have begun to reinstall the updates and things, but stopped at the 10.2.3 combo update...
Peace,
Marc
(I left off OS 9, and bizarrely my system is quicker than it has ever been...)