I have the following behaviour with a couple of our users.
When opening a document from our sharepoint 2010 site the document always opens in de browser first.
On site collection level as on library level the settings have been set so documents open in Word or Excel immediately. And this works for the biggest part of our users (120). But for about 3-5 users it doesn't work.
I am suspecting browser or OS settings, but I have no idea where to look.
The SP site is running on SharePoint Enterprise 2010 with CU Feb 2013. The users with the problems are running Windows XP SP3 with IE8.