I turned my iMac off for the night and when I started it this morning two things happened. I ethernet connect was gone and iTunes would crash on launch.

For the iTunes crash I have tried:
deleting the caches
reinstalling iTunes after deleting it
deleting the preferences
removing the plug-in
Restarting the iMac

iTunes comes up, does all of the finding of files including iTunes match, pops up the window about Restore Windows and dies a couple of seconds after that.

My mac is iMac, 8 G memory, 2T disk (1/2 used), 3.4G core i7, OS 10.7.2 and latest iTunes

The top of the crash reports follows. Any help is appreciated.

Process: iTunes [1911]
Path: /Applications/iTunes.app/Contents/MacOS/iTunes
Identifier: com.apple.iTunes
Version: 10.5.1 (10.5.1)
Build Info: iTunes-10514201~1
Code Type: X86 (Native)
Parent Process: launchd [479]

Date/Time: 2011-11-30 08:53:10.395 -0800
OS Version: Mac OS X 10.7.2 (11C74)
Report Version: 9

Interval Since Last Report: 809986 sec
Crashes Since Last Report: 36
Per-App Interval Since Last Report: 1267412 sec
Per-App Crashes Since Last Report: 19
Anonymous UUID: 4F9858CA-7CED-4656-9461-999D04DE402F

Crashed Thread: 22

Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x00000000fd2f172f

VM Regions Near 0xfd2f172f:
CG shared images 00000000cbf9f000-00000000cc1bf000 [ 2176K] r--/r-- SM=SHM
-->
Submap 00000000ffff0000-00000000ffff2000 r-x/r-x process-only submap

Application Specific Information:
objc[1911]: garbage collection is OFF