Photos on iPhone 4 are blurry

I just updated my software to 5.0.1 and I noticed while looking through my photos on my iPhone, they are blurry. While swiping through the photos, they will blur for at least 15 seconds then go back to normal. Btw- all of the picture were taken with my iPhone, none were synced from my mac library. Does anyone know how to fix this? Thanks!