Quote Originally Posted by Nige
If it's framed and there's a spec of dust after closing it up... you open it and get rid of it. Clean the glass. Things like that people viewing it probably won't notice, but you will and you'll worry to boot!
But thre's always ONE more bit of dust. No matter how clean you think it is, a bit always gets in there at the last minute.

When I was at the Aperture 50 Exhibition earlier in the year, I spotted a HAIR under the glass of one photo... Made me feel a lot better to know that the pro's have trouble too.