ok guys,i hv changed alot of setting since this problem
i have deleted wlan0,eth0 that in
then recreated it with system-config-network,letting the system itself generate all the configuration of the wlan0
now the wlan is
# Please read /usr/share/doc/initscripts-*/sysconfig.txt
# for the documentation of these parameters.
the only thing i have changed in this configuration are
the problem still presist
Determining IP information for wlan0... failed; no link present. Check cable?