Your swap should ideally be twice your RAM.
Could someone explain this to me... (please no lengthy explantation of what swap space means, please... I'm a computer science graduate :) )
I've never quite figured out why. After all, your system uses a certain amount of virtual memory that depends on the apps you use.
physical ram + swap space used = virtual memory used
Thus shouldn't you need *less* swap space if you have more RAM? I have 384MB of RAM and my swap space usage remains stubbornly stuck at 0. Wouldn've been an awful waste of 768 MB or hard disk space if I'd followed that rule-of-the-thumb!!
(Instead what I've done is to remove the swap partition and allocate swap files if I ever do anything memory-intensive enough to require more space... and that has never happened)