The most powerful PvP glyph for Paladins looks like it's going to be hammered with the nerf bat. The Glyph of Turn Evil originally reduced the cast time of Turn Evil by 100%. In Patch 3.0, the spell Turn Evil had its cooldown removed, so when Paladins used this glyph they had access to a spammable instant cast crowd control spell that could completely shut down Death Knight ghouls and gargoyles, as well as Warlocks under the effects of Metamorphosis. In Patch 3.0.8, Blizzard revised the glyph to add an 8 second cooldown to the spell.
Even with the change, some players are still crying foul, and Ghostcrawler responds that instant cast Turn Evil "might be a problem" and that they are likely to fix it. This is the latest in a series of nerfs and reworks applied to Paladin glyphs -- mostly affecting PvP -- since the release of Wrath of the Lich King. The original Glyph of Crusader Strike had Crusader Strike deal more damage to stunned targets, but now currently reduces the cost of the spell by 20%. The 41-point talent is plain enough (with the removal of the Judgement refresh aspect in 3.0) and the glyph to accompany it is even more boring. Glyph of Hammer of Justice originally extended the stun by 1 second but now only increases the range of the spell by a mere 5 yards.
With the speed Blizzard tends to hotfix issues like these, expect a nerf to the Glyph of Turn Evil very soon. What was that famous Ghostcrawler line again? Oh, yeah... "to the ground, baby!"