Network-manager broke totally after the latest updates

[Lazy]

Network-manager doesn't appear in the bar in the upper corner and my computer doesn't connect to any network automatically. I had to edit /etc/network/interfaces manually to even file this bug report.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: network-manager 0.9.0-0ubuntu3
ProcVersionSignature: Ubuntu 3.0.0-11.18-generic 3.0.4
Uname: Linux 3.0.0-11-generic x86_64
ApportVersion: 1.23-0ubuntu1
Architecture: amd64
CRDA: Error: [Errno 2] No such file or directory
Date: Wed Sep 21 18:38:39 2011
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
IpRoute:
 default via 192.168.0.1 dev eth1 metric 100
 169.254.0.0/16 dev eth1 scope link metric 1000
 192.168.0.0/24 dev eth1 proto kernel scope link src 192.168.0.109
Keyfiles: Error: [Errno 2] No such file or directory
NMTool: Error: command ['nm-tool'] failed with exit code 127: nm-tool: error while loading shared libraries: libnss3.so: cannot open shared object file: No such file or directory
NetworkManager.state:
 [main]
 NetworkingEnabled=true
 WirelessEnabled=true
 WWANEnabled=true
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: network-manager
UpgradeStatus: Upgraded to oneiric on 2011-09-16 (4 days ago)

[Sérgio Faria (sergio91pt)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 855171, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Feel free to continue to report any other bugs you may find.