xbian stucked at boot

[effemmeffe]

I had a working copy of xbian.
Yesterday it became slow, so I checked the uptime and it was 15 days so I decided to reboot (old windows habit are hard to die): xbian wasn't enable to complete the boot.
Now all I can see is the boot screen with the bar at the end and it's stucked there from a couple of hours. I tried to boot a few times and got the same result.
Any idea?
I can't login with ssh and samba is not working.