It's been awhile since we've talked of browser wars, but a new round could be upon us.

I spoke at Interop with Web traffic monitoring firm Gomez's CTO, Imad Mouline, who noted increasing need among his customers for insights into how new apps and services will perform across browsers.

That's consistent with our internal experiences; when we launch new Web features, we're now testing across two versions of IE (7 with Vista, 6 with everything else) plus Firefox and even Opera.

What do you think: Are the browser wars back? Are your development efforts complicated by the bifurcation of IE? What IT management issues are introduced by a proliferation of competing browsers?