Do you have a pvp trinket/are you undead?

If you're a lock arena-ing against an Undead warrior, you're pretty much screwed. Will of the Forsaken and a PVP trinket destroy any chance of you getting away. 3 Seconds off a Death Coil is NOT enough to outrange an intercept (unless you get lucky, which is usually not the case)

And then of course there's the fact that warrior's and rogue's are practically the only classes that can beat locks.

As a ret pally, I'm screwed when I come across a hunter, lock, shaman, druid, warrior etc and Blizzard doesn't seem to want to stop that.

But, oh no, locks are being killed. Can't have that.

If you're being beaten by locks as a pally there's something seriously wrong with your play style... I'm sure you at least can trinket out of fear, and your bubble negates our dots. At least with a priests bubble we can still land the dots to eat away at the bubble or wait for it to disappear. Pally bubbles? Gotta wait. Complete immunity to everything.

I play an SL/SL lock in pretty decent gear with nearly 400 resil and 1200 spell damage when buffed, and a pally can give me a good run for my money if they time their stuns right and bubble at the right time. Simply put, SL/SL locks, the only locks with any real pvp survivability, have no real burst damage save for a 1.5 second cast searing pain or a 2 second immolate. And these just aren't hitting hard enough to be staples of burst damage.

Seriously though, use trinkets intelligently, time stuns during fear casts, bubble AFTER we've dotted you, and just heal when you need to... remember, fear is on diminished returns. No lock stands a chance against you. I can't believe I had to spell this out for you...

This is a reply to Apoc...

I think you are completely out of touch from reality regarding pally vs lock pvp. The consensus is that lock almost always owes pally given similiar equipments and level of skills. I support this based on my experience with my lock and pally (both 70).

Your statement assumes that lock is just sitting there looking stupid, doing nothing. For example, do u think a right-minded lock with a felhunter (a pet which most pvp lock will go in company with) will let a pally heal freely. Of course a pally will bubble and heal to prevent spell lock but this will only tip the bar to the lock (the lock will simply move away from the pally and prepare for the next dot fest).