For 3.6 I think you're missing a </span>
PHP Code:
var cyb_pm_phrase_stripped = cyb_pm_phrase.replace('</a>:', '</a>:<if condition="$vboptions[cyb_pme_enable_pmmenu]"><span id="navbar_cybppenh"></if><if condition="($vboptions[cyb_pme_newpmsig_color]!='') AND ($bbuserinfo['pmunread'] > 0)"><blink> <span style="color:$vboptions[cyb_pme_newpmsig_color];">').replace(',', '</span></blink>,</if>');
PHP Code:
var cyb_pm_phrase_stripped = cyb_pm_phrase.replace('</a>:', '</a>:<if condition="$vboptions[cyb_pme_enable_pmmenu]"><span id="navbar_cybppenh"></if><if condition="($vboptions[cyb_pme_newpmsig_color]!='') AND ($bbuserinfo['pmunread'] > 0)"><blink> <span style="color:$vboptions[cyb_pme_newpmsig_color];">').replace(',', '</span>[B]</span>[/B]</blink>,</if>');
I had to add that otherwise the ajax menu for private messages would pop up when clicking on the 'New' link.