All my facebook friends were deleted??

hi there, i dont know why...but i got home from a mates going away dinner, logged onto facebook to see that i only had 1 facebook friend? i had been on earlier that day and had around 280 friends does any1 know if there is anyway to get them back without re-adding them individually im pritty upset and dont know if i was hacked or just somehow facebook died on me or what

any help will be appreciated

Hello!

This may be an internet problem maybe

Try cleaning your cookies and cache.

The best,