Use nLite, it can really minimize the ram usage.
Minimizing ram usage means caching more to disk. If you have only less
memory build in more important things will get cached with such tools,
resulting in having heavy disc usage and slowing down everything.
One thing that might help is get a good defrag tool and check if your
mft and your paging file isn´t fragmented badly. And best is to set
your min and max size of paging file to a fixed value e.g. 1024MB min and max
because then there will be no resize (resizing the paging file slows down a
lot).
I wonder why a casual to semi-hardcore PC user would install more than 1Gb of ram.
Casual gamers won´t need much more (at the moment

) but if you
have many services running you´ll need it (or if you do a lot of 3d rendering,
videoediting, etc etc). My avg mem usage is ~600 MB when no game is
opened
My page file usage is below 15 MB and I clean up my PC from time to time
Clean up is a good thing, as for the page file size see my comment above.
BTW there are games that need a minimum size of page file to start
(don´t ask me why). If you set your page file size to phys. build in RAM or
twice it´s size it should run fine, as WinXP is slight worser in caching than
2k I would not worry configuring such "huge" page files as both OSes
can handle cache very well and really do only cach the things out of
your RAM that are not always used. Too small page files result in
speed decrease because it always tries to cache out unused things
of your page file and if the page file is too small it buffers some data
back to memory and so on and so on so you will get a lot more of buffer
accesses.
If you want to know more why misconfigured page files will break down
your system performance you can search infos about timings of L2 Cache,
Memory and HDD timings and how they work together, you´ll see how
caching too often will break down a lot of your CPU power.
For the guys with 1 GB and more RAM you should try disabling caching
Kernel to disc, this will not increase game performance or such things
but applications will start faster
I Hope you´ll manage a way to get your system to a clean fast multitask
switching
