Neither of the fixes suggested by Isaac, Brian or Crack34d worked on my Thinkpad T61 running up-to-date Intrepid. Instead, my solution was to follow the instructions outlined in Bug #275692 to add a file
/etc/pm/config.d/madwifi
containing the line
SUSPEND_MODULES="ath_pci"
Neither of the fixes suggested by Isaac, Brian or Crack34d worked on my Thinkpad T61 running up-to-date Intrepid. Instead, my solution was to follow the instructions outlined in Bug #275692 to add a file
/etc/ pm/config. d/madwifi
containing the line
SUSPEND_ MODULES= "ath_pci"