ctrl+alt+[f1 -f3] doesn't work
 

hi, i have problem
ctrl+alt+[f1 -f3] switch doesn't work, but back to ctrl+alt+f7 works normal. When i switch from ctrl+alt+f7 to ctrl+alt+f1 I see that on the dash flashes on the screen.
Ubuntu 10.04
thnx

What is the output of ps -ef | grep tty[1-3]?

When you write "I see that on the dash flashes on the screen" what do you mean by "on the dash"?

thnx. I solved it
my problem was in runlevel
when i put command runlevel it has returned unknown
i changed in file /etc/init/rc-sysinit.conf
from
start on filesystem and net-device-up IFACE=lo
to
start on filesystem and net-device-up IFACE=eth0
runlevel was 2 and virtual terminals up.
thnx.