Loose network connection every hour !

[Vince]

		Hi,
	I encounter a very strange problem with FC 3. Every hour I loose 
network, I mean I can no more ping my computer nor get any traffic 
through the Ethernet card. The ethernet card is a realtek !.
	The only way to get the network back is to push one time the power 
button of the computer and then networks comes back. I get the 
following lines then in log of the computer:

Feb  6 12:20:26 slimserver kernel: PCI: Found IRQ 12 for device 
0000:00:0a.0
Feb  6 12:20:26 slimserver kernel: eth0: link up, 100Mbps, full-duplex, 
lpa 0x45E1
Feb  6 12:20:31 slimserver kernel: hub 1-0:1.0: reactivate --> -22
Feb  6 12:20:31 slimserver kernel: hub 2-0:1.0: reactivate --> -22

	Do you have an idea what is doing that ? I have removed apmd services 
and everything that concerns energy savings !
		Thanks for all your tips :)

Vincèn