http://www.quirksmode.org/bugreports/archives/safari/index.html "If a blur event fires from an input when you close a tab (and not the entire browser), Safari crashes. Test page http://www.hartshorne.ca/2005/07/07/safari_onblur_crash/ Workaround is not included Reported by: Beau Hartshorne."
This has been fixed in ToT (http://bugzilla.opendarwin.org/show_bug.cgi?id=4194). Should I mark as duplicate?
Dupe, already fixed as Anders commented. *** This bug has been marked as a duplicate of 4194 ***