If you do the alt lglg from the main home screen you get the log area of the pearl...
I don't know about you, but I don't really think i need a log or warning for every module on my pearl... I am not running a webserver, or looking for bad hd, if you know what i mean....
If you menu, you should be able to get to the settings and disable/ or hide all logging on the pearl. Not sure if this helps with memory or speed, but i don't care about the log, if the phone freezes it is a hard reboot for me.