You don't write which firmware are you using. For the Oleg's fw the possible solution was discussed here: http://wl500g.info/showthread.php?t=10748
However, the author didn't reported the result.
Another possible problem is that I guess during boot up you will not be able to guarantee which is #1 and which is #2, however, this problem can be solved by a simple script which will check which is where and restart the drivers if necessary.