User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7) Gecko/20040707 Firefox/0.8 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7) Gecko/20040707 Firefox/0.8 Fill out a form, submit, and then click the back arrow. The form variables may either be missing entirely or may take on a different value from the default or what was selected. Not all forms do this. It seems to be due to an odd interaction between <FORM>, <TABLE>, and <HIDDEN> tags. In particular, if there is both a <FORM> and <HIDDEN> tag between a <TABLE> tag and the table's first <TH> or <TD> tag, then the back button won't work. Bad HTML is certainly to blame. "But IE works..." >:) I've put example scripts at http://beeline.org/test1.cgi Reproducible: Always Steps to Reproduce: 1. Select a radio button on a form 2. Click submit 3. Click the back button Actual Results: No radio button is selected, not even the default. Expected Results: The radio button you had last selected should still be selected. Seems like it might be related to bug 157145 Affects Mozilla 1.6, Firefox 0.92, Firefox 0.8 Not all forms do this. It seems to be due to an odd interaction between <FORM>, <TABLE>, and <HIDDEN> tags. In particular, if there is both a <FORM> and <HIDDEN> tag between a <TABLE> tag and the table's first <TH> or <TD> tag, then the back button doesn't work.

The problem is the rather malformed HTML (in particular, the totally invalid <form> and first <input> tag)... we have existing bugs on the issue...

This sounds like the same problem *** This bug has been marked as a duplicate of 254153 ***