rundll32.exe - application error.

Hi,
I've Vista Home which comes default with Dell laptop...but recently getting error...

Problem signature:
Problem Event Name: APPCRASH
Application Name: rundll32.exe
Application Version: 6.0.6000.16386
Application Timestamp: 4549b0e1
Fault Module Name: USER32.dll
Fault Module Version: 6.0.6002.18005
Fault Module Timestamp: 49e03821
Exception Code: c0000142
Exception Offset: 00009eed
OS Version: 6.0.6002.2.2.0.768.3
Locale ID: 1033
Additional Information 1: 9d13
Additional Information 2: 1abee00edb3fc1158f9ad6f44f0f6be8
Additional Information 3: 9d13
Additional Information 4: 1abee00edb3fc1158f9ad6f44f0f6be8


and some more..

"The application failed to initialize properly(0xc0000142). Click ok to terminate the application."
"windows host process (rundll32) has stopped working."

Run cmd.exe with administrative previlliges (right click on cmd.exe as admin) and type

sfc /scannow