With VoiceOver • go to google.com • vo to a button result: text repeated..."google search, google search button"
AXValue is now being reported for AXButtons, which it should not. AXValue shouldn't even be an attribute on AXButton 12/4/09 9:27 AM Chris Fleizach: this was a regression from this change made for GTK http://trac.webkit.org/changeset/46080 
Eventually we need to re-organize the methods returning text data on elements in accessibility (i have a bug for that)... but the immediate fix is that AXButtons on the Mac, should never have AXValue being returned..
Created attachment 44322 [details] patch
Attachment 44322 [details] did not pass style-queue: Failed to run "WebKitTools/Scripts/check-webkit-style" exit_code: 1 WebKitTools/DumpRenderTree/AccessibilityUIElement.cpp:225: Use 0 instead of NULL. [readability/null] [5] Total errors found: 1
stylebot... i will make that change... please consider patch updated
http://trac.webkit.org/changeset/51706