Werd up macolytes. I have a 14" 1.42 GHz (512 MB built-in) iBook. . . Max ram for it is 1.5 GB -- I wanted to get some opinions on whether or not 1.5 is overkill and if 1 gig would be sufficient. I use this machine for iTunes (I use airtunes a lot), firefox (lots of tabs), iChat, and other various crap. Do you think i'd see any type of performance gain with 1.5 GB vs. 1 GB?