InfoPath Dev

 I am using Sharepoint 2010 and Infopath 2010

 I have a form which has a data connection to a sharepoint list in the same site. In Infopath filler, the form behaves perfectly, but when I open it in the browser, it can't access the data connection. I have full rights to the list, so I can't see it being permissions.

 Any idea why it would work in Infopath but not the browser?

 I've got it working now...

 Turns out the function username() in Filler returns the username in upper case, but it returns lower case in the browser, so the filter wasn't finding any data. It's working now.