“Mozilla is out with the first update of 2010 to its open source
Firefox Web browser. Unlike its immediate predecessor, Firefox
3.5.7 is not being issued to fix security issues, but rather is an
update for a trio of stability-related bugs.“The fixed bug list for Firefox 3.5.7 includes one flaw
classified as critical and two as major by Mozilla. The critical
flaw is a fix for what Mozilla has labeled as a Topcrasher on
Windows for Firefox 3.5.x. The flaw was first reported last July
and carries the official bug title of, “[Win] Topcrasher for
Firefox 3.5.1 [@ memmove | nsTArray_base::ShiftData(unsigned int,
unsigned int, unsigned int, unsigned int)][@
nsObserverList::FillObserverArray]”
(https://bugzilla.mozilla.org/show_bug.cgi?id=507114).”