This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
I would suggest you move your JBoss outside the "orbeon xforms" folder. Move it to a folder which does not have a space in its path. Weird issues have been reported when JBoss (or Java or any Java products) have been installed in folders containing space in its path name.
If moving JBoss does not fix the problem, then post the new exception stacktrace.
You highlighted the error message that indicates that the login failed to your database. What database are you using? Please post the *-ds.xml file that declares the datasource for the database (enclose the XML text in UBBCode 'code' tags).
Finally, it is usually only necessary to post the first stack trace, not the full console log. Posting the full log makes your post harder to read and the harder a post is to read, the less likely it will get a response.