Based on recent postings in the OTN forums and from investigations with my own clients I have to warn you not to upgrade to Internet Explorer 7 if you are using Discoverer Viewer. After you upgrade to IE 7 you will not be able to drill to a related item because somehow IE 7 prevents you from seeing the list of items that you could drill to. This is certainly true if you are using Discoverer 10.1.2.0.2. Unfortunately, I have no idea whether the latest 10.1.2.2 patch (link to Abhinav's recent posting) fixes this. Does anyone know and has anyone been brave enough to try?
An interesting observation here is that IE 7 is included in Microsoft's automatic updates for XP. Therefore, if you have automatic updates enabled you may come in tomorrow and if you are not paying attention you could find that you have been upgraded. Microsoft state (link) that when the update is downloaded you will be presented with a window that will inform you that IE 7 is ready to install. You should not click Install when so prompted.
IE 7 is currently not certified for use with Discoverer and is also not certified for use against Oracle E-Business Suite 11i (link to Steven Chan's recent posting) Until such time as Oracle certify IE 7 for use against Discoverer and / or E-Business Suite I recommend turning off Microsoft's automatic updates.
Here is a workflow to alter the upgrade policy on Windows XP:
1. Launch Control Panel
2. Click Security Center
3. Click Automatic Updates
4. Deselect Automatic by selecting one of the other options
5. Click OK
On my own PC I set this to Download updates for me, but let me choose when to install them. I will then be able to select which updates I want. I certainly don't want to miss out on the other updates, and I certainly don't want to install IE 7 by any act of carelessness or confusion on my part.