--- slmodem-2.9.11_pre20080401.ebuild	2008-04-13 11:57:27.000000000 +0200
+++ slmodem-2.9.11_pre20080401.ebuild	2008-04-21 10:25:46.000000000 +0200
@@ -34,6 +34,11 @@ 
 		MODULE_NAMES="${MODULE_NAMES} slamr(net:${S}/drivers)"
 	fi
 	if use usb; then
+		if kernel_is ge 2 6 25; then
+			eerror USB is only supported for 2.6.24 and older kernels.
+			eerror For 2.6.25 and newer, you need to disable the usb USE-flag.
+			die USE=\"usb\" does not work with kernel >=2.6.25 
+		fi
 		MODULE_NAMES="${MODULE_NAMES} slusb(net:${S}/drivers)"
 		CONFIG_CHECK="USB"
 	fi