when a <select> box has the focus, pressing "Return" does not submit the form. this was working in Safari 2.
Created attachment 13057 [details] testcase
Confirmed with a local debug build of WebKit r19497 with Safari 2.0.4 (419.3) on Mac OS X 10.4.8 (8N1037).
<rdar://problem/4990046>
Committed revision 19633.