thunderbird keeps crashing

I have just loaded ubuntu 12.04 on my PC ( thinkpad E520), the only thing that is not working is thunderbird,
every time i open thunderbird , it automaticly check emails , and if i then click on any function, it crashes, ie closes completly and produces a mozilla crash report

Cash Report
Add-ons: {ad7d8a66-253b-11dc-977c-000c29a3126e}:0.8.38,<email address hidden>:1.5.2,{4C9FE6FE-2C83-11DC-90B4-DC8456D89593}:0.8.0,<email address hidden>:2.0.6,<email address hidden>:0.8.3,<email address hidden>:0.3.9,{a62ef8ec-5fdc-40c2-873c-223b8a6925cc}:0.13,<email address hidden>:1.2011n,{847b3a00-7ab1-11d4-8f02-006008948af5}:1.5pre,{e2fda1a4-762b-4020-b5ad-a41df1933103}:1.4,{972ce4c6-7e08-4474-a285-3208198ce6fd}:12.0.1
BuildID: 20120430060637
Comments: <email address hidden>
CrashTime: 1337876823
EMCheckCompatibility: true
FramePoisonBase: 7ffffffff0dea000
FramePoisonSize: 4096
InstallTime: 1337871123
Notes: OpenGL: Tungsten Graphics, Inc -- Mesa DRI Intel(R) Sandybridge Mobile -- 3.0 Mesa 8.0.2 -- texture_from_pixmap

ProductID: {3550f703-e582-4d05-9a08-453d09bdfdc6}
ProductName: Thunderbird
ReleaseChannel: release
SecondsSinceLastCrash: 1762
StartupTime: 1337876806
Theme: classic/1.0
Throttleable: 1
Vendor:
Version: 12.0.1

This report also contains technical information about the state of the application when it crashed.

I have reinstalled both thunderbird and ubuntu 12.04 still same problem,
i have installed thunderbird using sudo commands but as soon as i copy my files(restore from my backup hard drive )back on to my PC i get the same problem.(backup was made in ubuntu 11.04