Since FF 3 we have coloured address bar (not whole but part of it). As you probably know main idea is following: blue for DV certificates, green for EV certificates. Other description can be found e.g. here
VE also distinguishes DV from EV with appropriate tooltips: open lock with red cross inside for DV certificates, closed lock with green checkmark inside for EV certificates.
What puzzled me is that sometimes i get different results from FF and VE for same sites.
Example #1: FF tells that gmail login page has DV cert (blue color in address bar - site's owner unknown), at the same time VE tells that exactly same page has EV cert (closed lock with green checkmark inside - "secure and authenticated").
Example #2: FF tells that page https://ebanking.universalbank.com.ua/netbanking/
has DV cert, at the same time VE tells this page has EV cert.
Example #3 (this time Ff and VE show same results): FF tells that page https://ssl.scroogle.org/cgi-bin/nbbwssl.cgi
has DV cert, so tells VE.
For me info provided by VE is more trustworthy than by Ff, however i'd like to know why results differ? (or maybe i confused something in DV, EV reporting by Ff and VE?)update:
Ff do not display OV and DV in different colours (both in blue), but it appears that in all(?) cases it can recognize which unit is used (OV or DV), but this info is burried inside certificate's properties in FF 3.5.