trouble with connect to ad-hoc

[Aleksey K]

Hi.

I experience a some trouble with ad-hoc on my Ubuntu laptop (Ubuntu 
12.04 x86_64).
When my smartphone (CyanogenMod 9) trying to connect with network it 
stop on getting IP address. I also trying connect to ad-hoc from another 
laptop with Windows 7 and I'm facing with the same trouble.

The following simple steps how I create ad-hoc on my laptop with Ubuntu 
and trying to connect my smartphone:
1. In the Network-manager I click on Create New Wireless Network
2. Enter the Network Name, choosing Wireless Security WEP 128-bit and 
enter the Key.
3. I turn on wi-fi on my smartphone and trying to connect with created 
ad-hoc, but it stop on getting IP address.

Dnsmasq is running:
root at lenko:~# ps axu | grep dnsmasq
nobody    4147  0.0  0.0  28812  1284 ?        S    10:12   0:00 
/usr/sbin/dnsmasq --no-resolv --keep-in-foreground --no-hosts 
--bind-interfaces 
--pid-file=/var/run/sendsigs.omit.d/network-manager.dnsmasq.pid 
--listen-address=127.0.0.1 --conf-file=/var/run/nm-dns-dnsmasq.conf 
--cache-size=0 --proxy-dnssec
nobody    4182  0.0  0.0  28816  1448 ?        S    10:12   0:00 
/usr/sbin/dnsmasq --conf-file --no-hosts --keep-in-foreground 
--bind-interfaces --except-interface=lo --clear-on-reload --strict-order 
--listen-address=10.42.0.1 --dhcp-range=10.42.0.10,10.42.0.100,60m 
--dhcp-option=option:router,10.42.0.1 --dhcp-lease-max=50 
--pid-file=/var/run/nm-dnsmasq-wlan0.pid
root      4755  0.0  0.0   9380   936 pts/1    S+   11:13   0:00 grep 
--color=auto dnsmasq

Here is a part of syslog - http://pastebin.com/eAfkrcuV

Thanks for your advices.