A quick and short addemdeum to the Chrome for Applications Post:
Chrome for OBIEE
Chrome seems to work well with OBIEE - If you want to view information. The dashboards and Alerts in OBIEE rendered beautifully.
The problem I faced was when I tried to create an Answers request. The Catalog folders did not show up in the left pane and so there was nothing with which I could create a new request. There might be a setting that I might have missed, but Answers works well with IE and Firefox right out of the box. So I would hold off using Chrome for OBIEE for now.
The High Interactivity mode of Siebel is supported only on IE. So I am not evalutaing Siebel on Chrome- IE is clearly the best browser for Siebel.