Explorer crashes w/ error info

I have vista home premium and explorer.exe crashes when i open any dvd, cd,
movie fold on HD and several other places. The error says:

Problem signature:
Problem Event Name: APPCRASH
Application Name: explorer.exe
Application Version: 6.0.6000.16549
Application Timestamp: 46d230c5
Fault Module Name: StackHash_d6aa
Fault Module Version: 0.0.0.0
Fault Module Timestamp: 00000000
Exception Code: c0000005
Exception Offset: 00000000
OS Version: 6.0.6000.2.0.0.768.3
Locale ID: 1033
Additional Information 1: d6aa
Additional Information 2: 550813108d42c370043e28bb37aac5af
Additional Information 3: d6aa
Additional Information 4: 550813108d42c370043e28bb37aac5af

I am frustrated as I cant get anything off of my dvds. Anyone have any ideas?