Windows 7: computer failure

Dell Laptop

Win 7 Home pro.

As I use this laptop for making repots in MS Word 2003, the computer slows down & finally stops working.

Here is the error dump

Log Name: Application
Source: Application Hang
Date: 9/5/2011 11:55:10 PM
Event ID: 1002
Task Category: (101)
Level: Error
Keywords: Classic
User: N/A
Computer: liffeyjct
Description:
The program iexplore.exe version 8.0.7601.17514 stopped interacting with Windows and was closed. To see if more information about the problem is available, check the problem history in the Action Center control panel.
Process ID: f24
Start Time: 01cc6c22cfc5ea32
Termination Time: 0
Application Path: C:\Program Files (x86)\Internet Explorer\iexplore.exe
Report Id: 11ae66bd-d855-11e0-b560-996555cf7e85



Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Application Hang" />
<EventID Qualifiers="0">1002</EventID>
<Level>2</Level>
<Task>101</Task>
<Keywords>0x80000000000000</Keywords>
<TimeCreated SystemTime="2011-09-06T06:55:10.000000000Z" />
<EventRecordID>44211</EventRecordID>
<Channel>Application</Channel>
<Computer>liffeyjct</Computer>
<Security />
</System>
<EventData>
<Data>iexplore.exe</Data>
<Data>8.0.7601.17514</Data>
<Data>f24</Data>
<Data>01cc6c22cfc5ea32</Data>
<Data>0</Data>
<Data>C:\Program Files (x86)\Internet Explorer\iexplore.exe</Data>
<Data>11ae66bd-d855-11e0-b560-996555cf7e85</Data>
<Binary>430072006F00730073002D00700072006F00630065007300730000000000</Binary>
</EventData>
</Event>

Can anyone make sense of this & tell me how to correct the proble.?

Thanx in advance
Tully