Swap problem with F9 PPC

[Guillaume <guitouu free fr>]

Hi,

I installed an ibook G4 (256 Mo SDRAM) with Fedora 9 PPC.
I have a problem with the SWAP.

- the gnome system appet show me that I don t use the SWAP...

- when I use top command I get:
Swap:        0k total,        0k used,        0k free,    82388k cached

- the SWAP partition size is 1024 Mo !
I set it at install time and I verify with now with gparted

- The SWAP partition is in the /etc/fstab:
LABEL=SWAP-hda4         swap                    swap    defaults        0 0

- When I run a task that use some CPU/Memory, It crashs the kernel
When I does not crash, I get some really bad errors like "can not fork: 
counld not alocate memory"
Due to this problem, I can not run yum update on X session, It uses to 
memory
I run init 3 and then I run yum update ...
But It is not a normal behaviour

Someone have any idea of what happened ?

Guillaume