Index: madwifi-ng-r2834-20071106/ath/if_ath.c
===================================================================
--- madwifi-ng-r2834-20071106.orig/ath/if_ath.c	2007-11-07 14:02:00.533401273 +0100
+++ madwifi-ng-r2834-20071106/ath/if_ath.c	2007-11-07 14:02:00.957425434 +0100
@@ -2122,7 +2122,10 @@
 		ath_draintxq(sc);
 		if (!sc->sc_invalid) {
 			ath_stoprecv(sc);
+
+			/* XXX: this helps to avoid crashes on ifconfig down/up
 			ath_hal_phydisable(ah);
+			 */
 		} else
 			sc->sc_rxlink = NULL;
 		ath_beacon_free(sc);		/* XXX needed? */