One of the most common problems around the office seems to be the browser crashes when attempting to open files in a SharePoint document library.  Luckily, most of the time it is an easy fix. 

Problem: Internet Explorer crashes (stops responding) when you try to open an Office document in a SharePoint document library.

Scenario: You connect to a document library in a Microsoft Office SharePoint Server 2007 site or in a Microsoft Windows SharePoint Services 3.0 site by using Windows Internet Explorer 7 or Microsoft Internet Explorer 6. However, when you try to open a Microsoft Office document, Internet Explorer crashes (stops responding). 

This problem occurs if the following conditions are true, in the order in which they are presented:

• You install a Microsoft Office 2003 product on the computer.
• You install one or more 2007 Office system programs on the computer.
• You repair or update the installation of an Office 2003 product.

In this scenario, the older version of the Name.dll file becomes the registered version. When the Owssupp.dll file is used, it tries to use functionality that is not available. This condition causes Internet Explorer to crash (stop responding). 

Solution: Download and install Microsoft Hotfix Patch
http://support.microsoft.com/kb/938888