Hi,
I flashed my linksys wrt400n with its openwrt backfire 10.03.1-rc5  squashfs factory image.
I used LuCI to configure the router but didn't have internet access from either ethernet nor wireless, but router was accessible using web and ssh.
So I reboot it and reset it to defaults using webUI to gain access to internet.
However, the power led began to blinking but after turn the power off and again on, I got additional problem.
Now I can access webUI but
1) no internet  (server not found)
2) no ssh login: I have the following message:

root@ubuntu:/home/mohammad# ssh 192.168.1.1
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@    WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!     @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
It is also possible that the RSA host key has just been changed.
The fingerprint for the RSA key sent by the remote host is
c1:de:cc:61:0f:41:04:48:67:16:31:cc:96:e6:22:41.
Please contact your system administrator.
Add correct host key in /root/.ssh/known_hosts to get rid of this message.
Offending key in /root/.ssh/known_hosts:1
RSA host key for 192.168.1.1 has changed and you have requested strict checking.
Host key verification failed.

Any help, please !!