Windows 7 iexplorer 8 error

[yonetmen]

Hi everybody,

I installed Windows 7 x64 Enterprise edition yesterday and I got different errors at least 100 times. I'm getting errors of "Windows Live Messenger", Sidebar and mostly "Internet Explorer 8" Here are some reports from Event Viewer. Any help is appreciated.
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Faulting application name: iexplore.exe, version: 8.0.7600.16385, time stamp: 0x4a5bca42
Faulting module name: mshtml.dll, version: 8.0.7600.16385, time stamp: 0x4a5bdfcd
Exception code: 0xc0000005
Fault offset: 0x00000000001333a2
Faulting process id: 0x1ec
Faulting application start time: 0x01ca194f8a6f3880
Faulting application path: C:\Program Files\Internet Explorer\iexplore.exe
Faulting module path: C:\Windows\System32\mshtml.dll
Report Id: c82a0ba0-8542-11de-b652-00248c58a11f

Faulting application name: msnmsgr.exe, version: 14.0.8064.206, time stamp: 0x498cf586
Faulting module name: ntdll.dll, version: 6.1.7600.16385, time stamp: 0x4a5bdb3b
Exception code: 0xc0000005
Fault offset: 0x00032f15
Faulting process id: 0x2f8
Faulting application start time: 0x01ca18662cb8ecc0
Faulting application path: C:\Program Files (x86)\Windows Live\Messenger\msnmsgr.exe
Faulting module path: C:\Windows\SysWOW64\ntdll.dll
Report Id: 8f7c4780-8459-11de-a691-00248c58a11f

Faulting application name: sidebar.exe, version: 6.1.7600.16385, time stamp: 0x4a5bc9e1
Faulting module name: mshtml.dll, version: 8.0.7600.16385, time stamp: 0x4a5bdfcd
Exception code: 0xc0000005
Fault offset: 0x00000000001333a2
Faulting process id: 0x95c
Faulting application start time: 0x01ca1949cb6fa8c0
Faulting application path: C:\Program Files\Windows Sidebar\sidebar.exe
Faulting module path: C:\Windows\System32\mshtml.dll
Report Id: dd138000-8542-11de-b652-00248c58a11f

My conf:
AMD Phenom II X4 940
ATI Radeon HD4890
M3N78-EM
8GB RAM
500GB SATA