When I linked using a 2.4.0 kernel head System.map 0000000000000000 A usbdevfs_cleanup 0000000080001000 T _ftext 0000000080002288 T except_vec0_r4000 00000000800022f0 T except_vec0_r4600 0000000080002344 T except_vec0_nevada 000000008000239c T except_vec0_r45k_bvahwbug 00000000800023fc T except_vec0_r4k_250MHZhwbug 0000000080002458 T except_vec0_r2300 000000008000249c T except_vec1_generic 00000000800024dc T except_vec2_generic When I link a 2.4.2 kernlel head System.map 000000000000002c A usbdevfs_cleanup ffffffff80002000 T _ftext ffffffff80002288 T except_vec0_r4000 ffffffff800022f0 T except_vec0_r4600 ffffffff80002344 T except_vec0_nevada ffffffff8000239c T except_vec0_r45k_bvahwbug ffffffff800023fc T except_vec0_r4k_250MHZhwbug ffffffff80002458 T except_vec0_r2300 ffffffff8000249c T except_vec1_generic ffffffff800024dc T except_vec2_generic ---------------------------------- What am I doing that is causing the leading ffffffff in the addresses? Thanks, Scott