gdmgreeter crashed with SIGSEGV in __libc_start_main()

[Fallen Andy]

Binary package hint: gdm

Ubuntu 9.0.4 Jaunty Jackalope. Problem first appeared this morning (19th Feb 2009 Thursday). I suspect an update I did last night has B0rked gdm - Last update was around 11pm 18th Feb => 21:00 UTC. "Fix" (sic) was to login and startx by hand, but I'm getting repeated attempts of the (original) X server to start. and the desktop has an overlay of green vertical lines suggested the display driver is sort of ill. Sorry I can't be more specific - but I'm sure it's an update that's hosed me...

ProblemType: Crash
Architecture: i386
DistroRelease: Ubuntu 9.04
ExecutablePath: /usr/lib/gdm/gdmgreeter
Package: gdm 2.20.8-0ubuntu7
ProcCmdline: /usr/lib/gdm/gdmgreeter
ProcEnviron:
 LANG=en_US.UTF-8
 PATH=(custom, no user)
 SHELL=/bin/false
Signal: 11
SourcePackage: gdm
Stacktrace:
 #0 0x08064931 in ?? ()
 #1 0x0805213e in ?? ()
 #2 0xb73bf775 in __libc_start_main () from /lib/tls/i686/cmov/libc.so.6
 #3 0x08051671 in ?? ()
StacktraceTop:
 ?? ()
 ?? ()
 __libc_start_main () from /lib/tls/i686/cmov/libc.so.6
 ?? ()
Title: gdmgreeter crashed with SIGSEGV in __libc_start_main()
Uname: Linux 2.6.28-8-generic i686
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