I was extremely dissappointed when i got my macbook. I thought it was too slow and i could only open one firefox tab and maybe text edit if i was lucky. After adding a gb to my 256 (initially had 512) so now i have 1.25 gbs... it has made a tremendous speed increase, in every aspect. Opening programs, amt of programs, restart time... just about everything. I can now have bittyrant, word, dictionary, limewire, firefox with a few tabs, and itunes with music playing all open, and i barely feel any sluggishness... I think i may add another gb, i can only imagine how nice the results would be with another gb.