[ubuntu] Broadcom bcm4321

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http://ubuntuforums.org – I recently installed ubuntu 11.10. I tried the original STA drivers that I downloaded and installed. I have a broadcom bcm4321. I recently read in another post some say "bcm4321: some cards do not work in DMA mode (PIO is needed)" Can anyone tell me what this means? Also I have been fighting with this for a couple of days now. My drivers say they are active and working, and I can find my network. I Have connected to, and used this network before and it worked fine. Now when it tries to connect it keeps asking for my password every minute or so. Any ideas on the situation? Th (Hardware)