Unable to update

I am unable to update Avast I have copied the log below

12.12.2008 10:50:48 general: Started: 12.12.2008, 10:50:48
12.12.2008 10:50:48 general: Running setup_av_pro-4cd (1229)
12.12.2008 10:50:48 system: Operating system: Windows Vista ver 6.0, build 6001, sp 1.0 [Service Pack 1]
12.12.2008 10:50:48 system: Memory: 82% load. Phys:175336/980860K free, Page:1081240/2232404K free, Virt:2029424/2097024K free
12.12.2008 10:50:48 system: Computer WinName: PHILIP-PC
12.12.2008 10:50:48 system: Windows Net User: Philip-PC\Philip
12.12.2008 10:50:48 general: Cmdline: /downloadpkgs /noreboot /silent /progress
12.12.2008 10:50:48 general: DldSrc set to inet
12.12.2008 10:50:48 general: Operation set to INST_OP_UPDATE_GET_PACKAGES
12.12.2008 10:50:48 general: Old version: 4cd (1229)
12.12.2008 10:50:48 system: Using temp: C:\Users\Philip\AppData\Local\Temp_av_proI.tm~a02936 (20445M free)
12.12.2008 10:50:48 general: SGW32P::CheckIfInstalled set m_bAlreadyInstalled to 1
12.12.2008 10:50:48 internet: SYNCER: Agent=Syncer/4.80 (av_pro-1229;p)
12.12.2008 10:50:48 system: Computer DnsName: Philip-PC
12.12.2008 10:50:48 system: Computer Ip Addr: 192.168.2.3
12.12.2008 10:50:48 system: Installed in: C:\Program Files\Alwil Software\Avast4 (20445M free)
12.12.2008 10:50:49 internet: SYNCER: Type: use IE settings
12.12.2008 10:50:49 internet: SYNCER: Auth: another authentication, use WinInet
12.12.2008 10:50:49 package: Part prg_av_pro-4cd is installed
12.12.2008 10:50:49 package: Part vps-8121000 is installed
12.12.2008 10:50:49 package: Part news-4b is installed
12.12.2008 10:50:49 package: Part setup_av_pro-4cd is installed
12.12.2008 10:50:49 package: Part jrog-45 is installed
12.12.2008 10:50:49 general: Old version: 4cd (1229)
12.12.2008 10:50:52 file: SetExistingFilesBitmap: 1053->153->153
12.12.2008 10:50:52 general: GUID: 6ed8bae8-86f3-4d5f-ac37-660b4355e1c4
12.12.2008 10:50:53 general: Server definition(s) loaded for ‘main’: 202 (maintenance:0)
12.12.2008 10:50:53 general: SelectCurrent: selected server ‘Download91 AVAST Server’ from ‘main’
12.12.2008 10:50:53 internet: SYNCER: Type: use IE settings
12.12.2008 10:50:53 internet: SYNCER: Auth: another authentication, use WinInet
12.12.2008 10:50:53 general: Entered SetupProcessPro::Do( INST_OP_UPDATE_GET_PACKAGES )
12.12.2008 10:50:53 general: Entered SetupProcessWin32Avast::Do( INST_OP_UPDATE_GET_PACKAGES )
12.12.2008 10:50:53 general: Entered SetupProcessWin32::Do( INST_OP_UPDATE_GET_PACKAGES )
12.12.2008 10:50:53 general: Entered SetupProcess::Do( INST_OP_UPDATE_GET_PACKAGES )
12.12.2008 10:50:53 general: progress thread start
12.12.2008 10:50:53 internet: SYNCER: Agent=Syncer/4.80 (av_pro-1229;f)
12.12.2008 10:50:54 internet: Used server: http://download91.avast.com/iavs4x
12.12.2008 10:50:55 general: Server definition(s) loaded for ‘main’: 202 (maintenance:0)
12.12.2008 10:50:55 general: SelectCurrent: selected server ‘Download672 AVAST Server’ from ‘main’
12.12.2008 10:50:55 internet: SYNCER: Type: use IE settings
12.12.2008 10:50:55 internet: SYNCER: Auth: another authentication, use WinInet
12.12.2008 10:50:56 internet: Used server: http://74.52.200.66/iavs4x
12.12.2008 10:50:56 internet: Used server: http://74.52.200.66/iavs4x
12.12.2008 10:50:56 file: GetFileWithRetry: prod-av_pro.vpu downloaded .
12.12.2008 10:50:56 file: GetNewerStampedFile:DSA_FileVerify(C:\Users\Philip\AppData\Local\Temp_av_proI.tm~a02936\onefile), error: 0x2000000B
12.12.2008 10:50:56 package: Tried to download prod-av_pro.vpu but failed with error 0x20000011
12.12.2008 10:50:56 package: LoadAllDefs failed 0x20000011
12.12.2008 10:50:56 general: Err:The package is broken

This happens repeatedly

Cheers

Philip

Seems a temporary problem…
Can you try to repair your installation?
Go to Control Panel > Add/Remove programs > avast! antivirus > Remove. Then choose Repair function in the popup window (Repair).