what's wrong with my swap partition ?

[Supote Leelasupphakorn]

Hi list,

   I owned 2 boxes of FreeBSD 4.x and just noticed that the output
of command "swapinfo" are strange coz there are two lines of swap
entry like below. What's wrong with my 2nd boxes and how do I do
with this ?

--- snip from the 1st box ---
Device          1K-blocks     Used    Avail Capacity  Type
/dev/ad0s1b       2081152      172  2080980     0%    Interleaved


--- snip from the 2nd box ---
Device          1K-blocks     Used    Avail Capacity  Type
/dev/ad0s1b       1032144       64  1032080     0%    Interleaved
/dev/ad0s1b       1032144        0  1032144     0%    Interleaved  <------ 
why does it repeat again ?
Total             2064288       64  2064224     0%


TIA,
pjn