error: runtime directory '/run/udev' not writable

[Alex Bell]

Binary package hint: udev

I'm not sure why does it happen. But when booting my laptop I'm getting black screen for a few seconds with string: udevd[11067]: error: runtime directory '/run/udev' not writable, for now falling back to '/dev/.udev'
And there is one more issue I'm not sure it's connected, but when I'm powering down or try to restart my laptop sometimes it looks like shutting down normally, but then systems goes to black screen and stays like that. Not responding any commands and not doing anything. I've tried to wait but it can stay for hours like that.
I don't see anything special in logs about this situation after booting so I don't know why it's happening. Maybe someone could see something.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: udev 171-0ubuntu3
ProcVersionSignature: Ubuntu 2.6.39-3.10-generic 2.6.39
Uname: Linux 2.6.39-3-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
Date: Tue Jun 7 23:32:43 2011
InstallationMedia: Ubuntu 10.04.2 LTS "Lucid Lynx" - Release amd64 (20110211.1)
MachineType: Acer, inc. Aspire 5920G
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.39-3-generic root=UUID=7fd322bd-f4f2-4950-a0f8-ad4ee0d3493c ro quiet splash vt.handoff=7
SourcePackage: udev
UpgradeStatus: Upgraded to oneiric on 2011-06-07 (0 days ago)
dmi.bios.date: 07/25/2007
dmi.bios.vendor: Acer
dmi.bios.version: v1.3706
dmi.board.name: Chapala
dmi.board.vendor: Acer, Inc.
dmi.board.version: Not Applicable
dmi.chassis.type: 1
dmi.chassis.vendor: Acer, Inc.
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnAcer:bvrv1.3706:bd07/25/2007:svnAcer,inc.:pnAspire5920G:pvrNotApplicable:rvnAcer,Inc.:rnChapala:rvrNotApplicable:cvnAcer,Inc.:ct1:cvrN/A:
dmi.product.name: Aspire 5920G
dmi.product.version: Not Applicable
dmi.sys.vendor: Acer, inc.

[Alex Bell (ubuntu-upb)]

Here is my syslog.

[Alex Bell (ubuntu-upb)]

And syslog.1