Well, I can speak from experience....
I NEVER get a confromation email saying thanks for uploading, please wait for 5 day....I used to get them, but not a single one in over 3 months.
There have been several time that I uploaded something, looked at the My Skins page and it was there,waiting on approval, then came back later, and it was gone...It happens ALL the time!!
It doesn't mean that the mods didn't get it, it means it was rejected.
My question is, because I'm having the same issue....to which library are trying to upload to?
For me it only the Suite library, I can upload anywhere else, no problem, though every wallpaper I've tried, and a few other things have just disappeared without a trace....or rejection letter, for that matter.
Could this have something to do with User Classes....cause I work a lot with Pinchecl and his skins are automatically accepted but mine have to wait, so is it because I'm not classified high enough....I only wonder, because I'm a Mod at another site, and members with certain ratings can do certain things, editing, uploading, dowloading, posting pics...ya know that sort of thing.