DNS error with Fedora 14, 15 - "connection timed out; no servers could be reached"

[ndvhungctt]

I have a Dell laptop.
Using VMware with Fedora 14, 15 virtual machines. Network is ok, ping ok.
I have configured DNS on both 2 Fedora 14, 15. Step by step OK.
I have google, stop iptables, check /etc/nsswitch.conf, disable selinux also.
And I test with command: host, nslookup, ping , get this error:
";; connection timed out; no servers could be reached"
So AnyOne could help me? Thanks so much.

I configure DNS on Ubuntu, is ok. That's working.

---------- Post added at 12:45 PM ---------- Previous post was at 04:23 AM ----------

IP DNS Fedora 14: 192.168.0.10
# vi /etc/named.rfc1912.zones
zone "mysites.com" IN {
type master;
file "mysites.com";
allow-update { none; };
};

zone "0.168.192.in-addr.arpa" IN {
type master;
file "mysites.com.rev";
allow-update { none; };
};

# vi /var/named/mysites.com
$TTL 1D
@ IN SOA dns.mysites.com. mail.mysites.com. (
2011073001 ; serial
1D ; refresh
1H ; retry
1W ; expire
3H ) ; minimum
IN NS dns.mysites.com.
dns IN A 192.168.0.10
# vi /var/named/mysites.com.rev
$TTL 1D
@ IN SOA dns.mysites.com. mail.mysites.com. (
2011073001 ; serial
1D ; refresh
1H ; retry
1W ; expire
3H ) ; minimum
IN NS dns.mysites.com.
10 IN PTR dns.mysites.com.
# service named restart
# service iptables stop
# vi /etc/selinux/config # SELINUX=disabled
# vi /etc/resolv.conf
nameserver 192.168.0.10
# vi /etc/nsswitch.conf
hosts: files dns
# host dns.mysites.com
;; connection timed out; no servers could be reached

I also setup chroot.
# /etc/named/chroot/etc/named/named.conf # it includes /etc/named.rfc1912.zones too.

I'm very tired for 2 days. Help me! Fedora.