Is my snus moldy?

[cosmokramer]

Had a can of general portions expiration 01/2009, unrefridgerated for about a week and forgotten about. It was in my hamper, in a pair of pants. I discovered the can and was happy, but when i opened it i could see a lot of dust flying out of the can. The portions are still pretty moist, but there are a few dark spots on the portions, I'm sure these dark spots are not stains from juices. The spots seems to be a layering on top of the portion material itself, and it can be scraped off. The spots are quite small 1 mm or so. Do juices ever get to the outside of the portion, and dry out and able to scrape off? Well, is it common for a snus to get moldy long before the expiration date? Does snus even get moldy? I'm pretty confident what I have is moldy snus, judging by the scrapable spots on the portions and the large amount of dust coming out of the can when I opened it. (I opened several other cans, in the light, and none had any noticable dust flying out. Is it possible that perhaps they put a new expiration date sticker on an old can

The can was sealed tight, not factory sealed, but closed. and my hamper isn't gross and infected or nothing, I shower and don't stink or nothing.

[TBD]

It may be just salt build up. I opened a can of Retro, before the expiration date and saw spots, turn out it was just salt. General doesn't seem to have as much salt as Retro, still...
That might also explain the dust.

[lxskllr]

Can you post a close up picture?

I always keep my snus chilled, but a buddy of mine will keep his tins warm for weeks at a time with no problems. They'll dry out a bit, and the flavor will flatten some, but no odd growths.