No you can't delete as its a native app...but try a reset here. This will not change anything on your iPad and is just like rebooting a PC.
Hold the power off button and the home button simultaneously, keep holding them in and you will see the power off slide appear and disappear, wait until you see the Apple logo appear before releasing the buttons. It will take a little longer for your iPad to start.
Also what OS is your iPad on? If you have updated your apps but not your iPad, you can have problems here.
Look in Settings - General - about and look for version. Let us know how you go.
I agree,try the reset first,before taking more drastic measures.