Hey,
So basically I have my own private server for 3.3.5a and players HP is really low. For example, a level 1 paladin on my server has 18 HP while a level 1 paladin on Molten WoW has 68. The mobs have the same HP on both servers, so it isn't across the board HP differences, just players. Also, the starter mobs hit hard on my server and will usually kill your level 1, while on Molten they do very very little (1-2 DMG).