Hi mchain,
my PC has Win 7 Professional with Service pack 1 / 32 bits.
The Windows updates where the following:
Definition Update for Microsoft Office 2010 (KB982726)
Update for Microsoft Word 2010 (KB2827323)
Update for Microsoft Office 2010 (KB2826026)
Security Update for Microsoft Office 2010 (KB2826023)
Security Update for Microsoft Excel 2010 (KB2826033)
Security Update for Microsoft Office 2010 (KB2826035)
Security Update for Windows 7 (KB2864058)
Security Update for Windows 7 (KB2862330)
Security Update for Windows 7 (KB2862335)
Update for Windows 7 (KB2888049)
Security Update for Windows 7 (KB2884256)
Security Update for Windows 7 (KB2876284)
Update for Windows 7 (KB2882822)
Security Update for Microsoft .NET Framework 3.5.1 on Windows 7 SP1 x86 (KB2861191)
Security Update for Windows 7 (KB2847311)
Update for Windows 7 (KB2852386)
Cumulative Security Update for Internet Explorer 10 for Windows 7 Service Pack 1 (KB2879017)
Security Update for Windows 7 (KB2883150)
Security Update for Microsoft .NET Framework 3.5.1 on Windows 7 SP1 x86 (KB2863240)
Update for Windows 7 (KB2846960)
Security Update for Microsoft .NET Framework 3.5.1 on Windows 7 SP1 x86 (KB2861698)
Update for Microsoft .NET Framework 4 on XP, Server 2003, Vista, Windows 7, Server 2008 x86 (KB2836939)
Security Update for Windows 7 (KB2868038)
Security Update for Windows 7 (KB2864202)
Security Update for Microsoft .NET Framework 4 on XP, Server 2003, Vista, Windows 7, Server 2008 x86 (KB2858302)
Update for Windows 7 (KB2882822)
Windows Malicious Software Removal Tool - October 2013 (KB890830)
Sorry, but I do not remember what version I had before uninstalling Avast, but I always updated it.
My system crashed for the first time after I install updates from Windows Update, when automatically opened my email client Thunderbird. So I unchecked its automatic start, but hung again (can not remember what I was doing).
I uninstalled Avast, didn't apply aswclear.exe (don't know what it is ... I will find out) and downloaded the latest version of Avast's website, and reinstalled. It seemed it installed fine, but when offered to check the system, ir crashed again. Hope this info helps.
Thanks for you replay!