Paul writes in:
During PvP, what do I do when encountering a Warlock face to face? Fight or flee. My past experiences have taught me that they whoop my ass. How can we best them?
I'm not really that good at PvP, so take what I say with a grain of salt. Warlocks are kind of paladin kryptonite. It's pretty hard to beat a good warlock, especially if they have a felhunter out. Try to kill or fear the pet first. Remember you can use Turn Evil and Exorcism on warlock pets.
Other than that, you just have to wear them down. Heal early and often, with Flash of Light to save mana. Save your divine shield for when you are loaded down with DoTs, as it will remove all of them. If the warlock doesn't have Shadow Embrace or Unstable Affliction, Cleanse off the DoTs, otherwise just heal through the damage. Get the PvP trinket so you can break a Fear. Remember that you can Cleanse Drain Life and Drain Mana.
All in all, it's a pretty hard fight, especially if the warlock is good.
Any other tips for Paul, especially from people who PvP regularly?