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That is about what I get connected at as well. But it is a factor of my location, not the modem in my AE base station. Have you tried using the modem in your computer. It is only a problem if it gets connected consistanly at a higher rate of speed. Mine both connect at the same rate of speed.
 
i have found that different modems connect at different speeds (even though they should be the same). out on my 2 windoze boxes. one connects most of hte time at about 46kbits and the other at about 50kbits
 
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