1) What does free -m tell you?
[root@backup root]# free -m total used free shared buffers cached Mem: 374 83 291 0 8 41 -/+ buffers/cache: 33 341 Swap: 1027 0 1027
That looks good...is that the figures you get when you say Linux takes too much?
As suggested by Dave on this thread, I am going to upgrade the kernel on
the box. But a post from Alan suggests a possible bug in slocate.
Upgrade to 2.6.6 if you can. Things are better there and FC1 can handle 2.6.x out of the box (that is, no need to upgrade module tools and other stuff)