brakes and battery.

i have a 1999 town and country and i'm having some issues and hope someone can shed some light on them for me.
1.sometimes while driving i notice the brake pedal get real hard to depress and the car feels like it does'nt want to stop,but if i take my foot and push it from underneath it goes down like normal.i've already had the brake cylinder,rotors and pads changed but the problem still exists.2.i have a brand new battery in my van,but lately when i shut the van off if i leave the hazards
on or the interior lights on longer than 10 minutes the car won't start,but when i get a boost it cranks up immediately,could it be the alternator?help!!:banghead:

could be alternator , but it still could be the battery too , they have been known to be bad right out of the store... Also your you interior lights should go off by themselves after 10-15 minutes . If it is draining you may have some kind of short draining the battery .

what do you mean by pushing it from underneath?

when the brake pedal feels hard to depress i pull the pedal up with the top of my toes from underneath the brake pedal and i seems to temporarily solve the problem