Guitarists: Weird buzzing around the nut

It's most likely the strings buzzing off the first fret, which would mean that your action is too low at the nut. Dont go filing anything yet though!! .

Do the strings looks to be particularly close to the first or second fret?. If you strum it and look down on your neck (parallel to the frets) does it look like they're touching the frets when vibrating?.

It might be that the nut is loose in it's slot, or maybe has a hairline crack in it,but those would be very unlikely. I'm gonna stick with my "strings-too-low" theory .

It that's the case, then you'll pretty much have to bring to a luthier to have a new nut fitted. It shouldnt be overly expensive, or invasive and should make your guitar sound/feel alot better too, since the nut that's in there now is probably made from recycled toilet seats .

Bring it to a guitar store or luthier and ask their opinion. It's the only way to be sure.