air conditioner sucks and dosent blow hard

i have a 06 model and was wondering if anyone else had any issues with there ac?I live in so cal so its starting to warm up pretty quick.I have both of my side vents closed and the middle ones open and it just seen to be blowing hard and on top of it,it does not blow that cold.i have checked the ac for oil residue and have not seen any,so i need to check the pressure in the system.Has anyone else had this issue?

You might have a slow/small leak. Take it to a dealer since the car is still under warranty.