Views
Mifos has in the past had a number of bugs concerning the back button.
Emails related to this issue: Handling the Back Button Issue in Mifos, message from Mohammed Nyamatullah on 2006-06-21 15:35, and replies to it.
Checkin #11025 is an example of one fix (which adds randomNum to URLs, adds TransactionDemarcate, and adds some Flow code).
Example issues from issue tracker: Issue 1182 (the only one still open as of January 2007), Issue 10, Issue 40 (the oldest ones in this issue tracker), or just search the issue tracker for "back button".