Ive heard 42 regrowth is best, then ive heard that 50 blunt with a firblog was the way to go.....whats the best warden spec for rvr?

Depends on how you intend to play your warden. In our group the warden plays the role of a healer, mostly - to allow druids to take care of interrupts, buff shears etc. For that a high heal spec is needed (42 ? not sure) - the rest goes into nurture for resists and better buffs. He doesn't go into melee all that often but if he does, than only to interrupt so damage is really not important and a low weapon spec is sufficient.

If you want to solo a lot, then Sholah's suggestion sounds about right.

Wow, Sholah. First copy paste, then think, right? You prove your intellect in every single part of your posts.
Sigh ...

There is no heal over time for wardens on Uthgard, nor there is a shield line for wardens on Uthgard.
If you want to play in groups go 42 regrowth, 49 nurture, 10 blades.
There are less groups which play with a meele warden in RvR.

If you want to play solo, Sholah's suggestion won't work anyways because there are plenty skills not implemented for warden. Significantly the warden doesnt have shield spec on Uthgard -> no stun.
There is an after-block style in blades. But compared to other classes, other classes would work better in solo RvR.

"Woody" and "Harkon" played a long time solo warden. You should directly ask them on IRC or ingame if you're interrested into this.

if i remember right, 50 blunt gives you an after parry stun.. 10 secs or so? worked nicely on another server i played.

Anyone know of a good template for 42 reg?

Check the Template Thread here in this Forum and/or your Alliance Forum

I did nothing there though