Nikon d3000 - pictures show up slowing after taking pics?

Recently my Nikon D3000 started showing pictures slowly in it's LCD after taking pictures. For example, when I take a picture, the picture on the screen takes maybe 4-5 seconds to show up. I can't remember if this was the case when I first ordered the camera but I'm pretty certain that it was faster, almost instant. Any ideas why this is happening and if I should send to warranty?

I'd say it's your memory card. Faster cards record more quickly and that means the display is faster.
By a faster card and this will probably help. If it doesn't, yes call Nikon.

Could be indeed that your memory card is the culprit. Back it up to pc and format it in camera, see if that helps.

If not then perhaps reset the camera to the factory settings.