unity crashed while typing in dash. don't know why connection to indicator-weather is indicated

When I was typing looking for something in the dash, whole Unity crashed, top panel disappeared, no keyboard shortcuts work except for Ctrl-Alt-T for terminal. I tried to start Unity from terminal but got some error messages which I cannot reproduce because no copy-and-paste works. Only one viewport available, no window decoration etc.

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: indicator-weather 12.07.30~precise1 [origin: LP-PPA-weather-indicator-team]
ProcVersionSignature: Ubuntu 3.2.0-27.43-generic 3.2.21
Uname: Linux 3.2.0-27-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu12
Architecture: amd64
CrashCounter: 1
CrashDB: indicator_weather
Date: Fri Aug 24 21:11:18 2012
ExecutablePath: /usr/bin/indicator-weather
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
InterpreterPath: /usr/bin/python2.7
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/bin/indicator-weather
SegvAnalysis:
 Segfault happened at: 0x7f72e32fcd9d: mov 0x4(%rbx),%ecx
 PC (0x7f72e32fcd9d) ok
 source "0x4(%rbx)" (0x7f72ba0b6004) not located in a known VMA region (needed readable region)!
 destination "%ecx" ok
 Stack memory exhausted (SP below stack segment)
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: indicator-weather
StacktraceTop:
 ?? () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
 gtk_icon_theme_has_icon () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
 ?? () from /usr/lib/libappindicator.so.1
 g_cclosure_marshal_VOID__STRINGv () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
ThirdParty: True
Title: indicator-weather crashed with SIGSEGV in gtk_icon_theme_has_icon()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout lpadmin nopasswdlogin plugdev sambashare vboxusers