Comment 16 for bug 940631

We're seeing quite a few posts in SUMO about password prompts, and also comments in crash reports which are hangs.

But not much new stuff being reported in bugzilla - most in this query don't fit the mold of this bug
https://bugzilla.mozilla.org/buglist.cgi?o5=substring&bug_id=973759%20967801%20%201158217%201152528%201122762%201158217%201152528%201122762%20497543%20433238%20360064%20348997%20348941%201167968%201119554%201121119%20918724%201161686%20918724%201167918%201188034%201164364%20524403%201124895%201167968%201119554%201121119%201170088%20917325%201119063%201168126%201101026%20%20%20998893%201120129%201121040%201134846%201145754%201152422%201155390%201118511%201120129%201121040%201121292%201123927%201124039%201147651%201152422%201155390%201156400%201156601%20%201171502%201172672%201172758%201173688%20%20%2038933%20170603%20177175%20224406%20%20%201132211%201165505%20267203%20105843%20112564%201167523%201176025%201150274%20%20%2057351%20896620%20158030%201058438%20209423%20464810%20517953%201182218%20286857%20%20%20499223%201191084%20983326%201174333%201183908%201188622%201192066%201118400%201186123%201190938%201181814%201121291%20259996%20691148%20%20%201174815%201175273%201129582%201187695%201067069%201153250%201135657%201188733%201178055%201095029%201144856%201148196%201169702%20680726%201148325%201178855%201183442%201175941%201188456%201183071%20%20%201185000%20999544%201182296%20865789%201138678%201185443%201185112%201185113%20687745%201148771%20%201185113%201163339%20999544&list_id=12462781&bug_severity=blocker&bug_severity=critical&bug_severity=major&bug_severity=normal&j2=OR&o1=nowordssubstr&o9=anywordssubstr&v10=thunderbird&v5=dataloss&v9=thunderbird%20mail&chfieldfrom=95d&o4=anywordssubstr&v1=test%20intermi%20sync%20telemetry%20door%20show%20crash&longdesc_type=allwordssubstr&v4=secur%20places&f10=longdesc&bug_id_type=nowords&f1=short_desc&o3=anywordssubstr&o7=nowordssubstr&j8=OR&f8=OP&v3=password%20certif%20lost%20pwd&o11=substring&resolution=---&resolution=FIXED&resolution=INVALID&resolution=WONTFIX&classification=Client%20Software&classification=Components&v7=test%20layout%20mach&f9=product&f4=component&chfieldto=Now&query_format=advanced&o10=substring&f3=short_desc&f2=OP&f11=short_desc&longdesc=password&f5=keywords&f6=CP&product=Core&product=MailNews%20Core&product=NSS&product=Thunderbird&product=Toolkit&f7=component