[quote name='elessar123']My 1080 shelf is not a 2009 for sure, so it might have been a 2006. The baseboard is also a little short for the height. I didn't have it mounted at 2 different apartments and it never fell... Not saying you shouldn't mount it.
*edit* Actually, wait, maybe mine was a 2009, cause now that I think about it, I bought it around the time Circuit City went under, which was 2009.[/QUOTE]
If your shelves are full and it hasn't fallen over, then I doubt they are the old ones.
When you piece together the new ones it doesn't tip over until you actually start putting stuff onto the shelves, and then it starts to get wobbly.
Mine leans against the wall because the baseboard is long enough to distribute most of the weight to where it should be.
But I've had many friends that had the old ones, and they all had to mount their stands. They still liked them, but they just didn't like the fact the old design forced you to mount it.