broadcom wireless bcm4318 connection problem

[metin]

hi all,
I have a notebook with a wireless adapter (broadcom bcm4318). I read 
thoroughly the relevant pages in www.linuxwireless.org but couldn't find 
an answer so I am writing this message to get help. I am having 
connection problems with the module b43; I can connect to the internet 
without problems but the connection drops unexpectedly even in good 
signal conditions totally randomly after a couple of minutes and is  not 
  established again automatically. With the old deprecated module 
bcm43xx, I have no problems but it will be removed from the newcoming 
kernels.
thank you