Help Diagnosing Noise

I have an 07 2.7 4x4 5 speed. I have been trying to figure out what this noise is, after i release the clutch and hit the gas pedal immediately i get a popping sound .It seems to be coming from middle ways or back of the truck.I also get the same thing sometimes when in gear and goose the gas pedal.I don't seem to get vibration from anywhere so you guys think this may be drive shaft, clutch or something else ?

 

Sounds like universal joints to me

 

How often do you grease them

 

U Joint like Bell214b said

 

Often

 

I got the notice from Toyota awhile back, I may have to pay them a visit

 

Thanks for your help guys, after taking my truck to the dealership they replaced the rear u-joints at no cost.I have had Air bag light,seatbelt fastner, gas pedal sticking, frame replacement and now u-joints,but at least they fixed it.