Internet Explorer has stopped working (event name - APPCRASH) - Damo

When attempting to finalise the purchase of products online I get the message
below. Does anyone have any ideas what is going on?

Problem signature:
Problem Event Name:	APPCRASH
Application Name:	iexplore.exe
Application Version:	7.0.6000.16386
Application Timestamp:	4549b133
Fault Module Name:	StackHash_ed4b
Fault Module Version:	6.0.6000.16386
Fault Module Timestamp:	4549bdc9
Exception Code:	c0000374
Exception Offset:	000af1c9
OS Version:	6.0.6000.2.0.0.768.3
Locale ID:	3081


- Damon