Huge processor's loading by NetworkManager

[Nicholas Shatokhin]

NetworkManager uses CPU on over 80%. Especially when I download something by Transmission and then close Transmission

robotex@robotex-laptop:~$ lsb_release -rd
Description: Ubuntu 12.04 LTS
Release: 12.04

robotex@robotex-laptop:~$ apt-cache policy network-manager
network-manager:
  Installed: 0.9.4.0-0ubuntu4.1
  Candidate: 0.9.4.0-0ubuntu4.1
  Version table:
 *** 0.9.4.0-0ubuntu4.1 0
        500 http://ua.archive.ubuntu.com/ubuntu/ precise-updates/main i386 Packages
        100 /var/lib/dpkg/status
     0.9.4.0-0ubuntu3 0
        500 http://ua.archive.ubuntu.com/ubuntu/ precise/main i386 Packages

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: network-manager 0.9.4.0-0ubuntu4.1
ProcVersionSignature: Ubuntu 3.2.0-25.40-generic 3.2.18
Uname: Linux 3.2.0-25-generic i686
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu8
Architecture: i386
Date: Thu Jun 21 23:08:13 2012
IfupdownConfig:
 auto lo
 iface lo inet loopback
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
IpRoute:
 default via 109.254.9.1 dev eth0 proto static
 109.254.9.0/24 dev eth0 proto kernel scope link src 109.254.9.243 metric 1
 169.254.0.0/16 dev eth0 scope link metric 1000
NetworkManager.state:
 [main]
 NetworkingEnabled=true
 WirelessEnabled=true
 WWANEnabled=true
 WimaxEnabled=true
SourcePackage: network-manager
UpgradeStatus: Upgraded to precise on 2012-04-03 (78 days ago)
nmcli-dev:
 DEVICE TYPE STATE DBUS-PATH
 wlan0 802-11-wireless disconnected /org/freedesktop/NetworkManager/Devices/1
 eth0 802-3-ethernet connected /org/freedesktop/NetworkManager/Devices/0

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.