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alt131 - 10:16 am on Mar 2, 2012 (gmt 0)
Hi Jenya, are the other elements inside footer positioned? From your description I suspect not and if I am right, they are "in flow" so will adjust themselves so they are "positioned somewhat to where they are supposed to" as the viewport (and so footer) changes size.
However, as I said above, an absolutely positioned element has been "removed from the flow". If it is the only element out of the flow it will be the only element behaving differently.
To fix, remove the position:absolute and try using margins to achieve the layout you want instead.