Emacs stopped working

I have now updated several instances of kubuntu to version 13.02. In all cases emacs stopped working. Most of the time now no new windows appears when i start emacs from a terminal window. Somtimes such an emacs windows appears, but freezes as soon as I try do to, e.g. a "dired".
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ApportVersion: 2.9.2-0ubuntu8
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC4: staffans 2384 F.... pulseaudio
 /dev/snd/controlC0: staffans 2384 F.... pulseaudio
 /dev/snd/controlC3: staffans 2384 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
DistroRelease: Ubuntu 13.04
HibernationDevice: RESUME=UUID=aade6ee3-e68c-48e3-a6c7-25e65dd63d89
InstallationDate: Installed on 2012-10-21 (188 days ago)
InstallationMedia: Lubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.1)
MachineType: System manufacturer System Product Name
MarkForUpload: True
Package: linux (not installed)
ProcEnviron:
 LANGUAGE=en_US:en
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-19-generic root=UUID=8c7663f6-7191-4f05-8cb7-22490308f9a4 ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 3.8.0-19.29-generic 3.8.8
PulseList:
 Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied
 No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
 linux-restricted-modules-3.8.0-19-generic N/A
 linux-backports-modules-3.8.0-19-generic N/A
 linux-firmware 1.106
Tags: raring
Uname: Linux 3.8.0-19-generic x86_64
UpgradeStatus: Upgraded to raring on 2013-04-25 (2 days ago)
UserGroups:

WifiSyslog:

dmi.bios.date: 01/08/2007
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1405
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: A8N32-SLI-Deluxe
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1405:bd01/08/2007:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnA8N32-SLI-Deluxe:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer