Once we upgrade to Bugzilla 3.0.x, we need to enable the 'utf8' parameter and fix the encoding of some comments in the database. The contrib/recode.pl tool does the work, but it fails on certain comments because of Bug 9630 in nightly builds of WebKit that caused non-breaking spaces to be inserted into the content of submitted textareas.
*** This bug has been marked as a duplicate of 16847 ***