when you're surfing the web, the application freezes or when attempting to close just freezes, the event viewer sends this log, may help.
Faulting application name: iexplore.exe, version: 9.0.8112.16448, time stamp: 0x4fecf1b7
Faulting module name: unknown, version: 0.0.0.0, time stamp: 0x00000000
Exception code: 0xc0000005
Fault offset: 0x59030035
Faulting process id: 0x2d68
Faulting application start time: 0x01cd9044cc0a7aff
Faulting application path: C:\Program Files (x86)\Internet Explorer\iexplore.exe
Faulting module path: unknown
Report Id: 7459405f-fc39-11e1-aa30-4c8093734a19