I have found the file where it writes the same logs as yours : kernel.log I have put the Ubuntu kernel time network in this thread because they may be helpful to resolve this RT73USB periodically connection lost. Hope they can decided about status and importance of this bug. Thanks! Nicolas Oct 16 21:17:27 Ubuntu-Nicolas kernel: [ 27.489702] firmware: requesting rt73.bin Oct 16 21:17:27 Ubuntu-Nicolas kernel: [ 27.697766] NET: Registered protocol family 17 Oct 16 21:17:39 Ubuntu-Nicolas kernel: [ 39.711470] NET: Registered protocol family 10 Oct 16 21:17:39 Ubuntu-Nicolas kernel: [ 39.712148] lo: Disabled Privacy Extensions Oct 16 21:17:39 Ubuntu-Nicolas kernel: [ 39.712890] ADDRCONF(NETDEV_UP): eth0: link is not ready Oct 16 21:17:39 Ubuntu-Nicolas kernel: [ 39.713695] ADDRCONF(NETDEV_UP): wlan0: link is not ready Oct 16 21:18:15 Ubuntu-Nicolas kernel: [ 75.530407] wlan0: authenticate with AP f2:3f:8b:e3:17:f0 Oct 16 21:18:15 Ubuntu-Nicolas kernel: [ 75.531913] wlan0: authenticated Oct 16 21:18:15 Ubuntu-Nicolas kernel: [ 75.531923] wlan0: associate with AP f2:3f:8b:e3:17:f0 Oct 16 21:18:15 Ubuntu-Nicolas kernel: [ 75.535158] wlan0: RX AssocResp from f2:3f:8b:e3:17:f0 (capab=0x411 status=0 aid=1) Oct 16 21:18:15 Ubuntu-Nicolas kernel: [ 75.535165] wlan0: associated Oct 16 21:18:15 Ubuntu-Nicolas kernel: [ 75.535752] ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready Oct 16 21:18:26 Ubuntu-Nicolas kernel: [ 86.388012] wlan0: no IPv6 routers present Oct 16 21:18:46 Ubuntu-Nicolas kernel: [ 106.306448] type=1503 audit(1224184726.124:5): operation="inode_permission" requested_mask="r::" denied_mask="r::" fsuid=7 name="/proc/7298/net/" pid=7298 profile="/usr/sbin/cupsd" Oct 16 21:18:47 Ubuntu-Nicolas kernel: [ 107.334861] type=1503 audit(1224184727.150:6): operation="inode_permission" requested_mask="r::" denied_mask="r::" fsuid=7 name="/proc/7306/net/" pid=7306 profile="/usr/sbin/cupsd" Oct 16 21:18:47 Ubuntu-Nicolas kernel: [ 107.334895] type=1503 audit(1224184727.150:7): operation="socket_create" family="ax25" sock_type="dgram" protocol=0 pid=7306 profile="/usr/sbin/cupsd" Oct 16 21:18:47 Ubuntu-Nicolas kernel: [ 107.334903] type=1503 audit(1224184727.150:8): operation="socket_create" family="netrom" sock_type="seqpacket" protocol=0 pid=7306 profile="/usr/sbin/cupsd" Oct 16 21:18:47 Ubuntu-Nicolas kernel: [ 107.334910] type=1503 audit(1224184727.150:9): operation="socket_create" family="rose" sock_type="dgram" protocol=0 pid=7306 profile="/usr/sbin/cupsd" Oct 16 21:18:47 Ubuntu-Nicolas kernel: [ 107.334926] type=1503 audit(1224184727.150:10): operation="socket_create" family="ipx" sock_type="dgram" protocol=0 pid=7306 profile="/usr/sbin/cupsd" Oct 16 21:18:47 Ubuntu-Nicolas kernel: [ 107.334933] type=1503 audit(1224184727.150:11): operation="socket_create" family="appletalk" sock_type="dgram" protocol=0 pid=7306 profile="/usr/sbin/cupsd" Oct 16 21:18:47 Ubuntu-Nicolas kernel: [ 107.334940] type=1503 audit(1224184727.150:12): operation="socket_create" family="econet" sock_type="dgram" protocol=0 pid=7306 profile="/usr/sbin/cupsd" Oct 16 21:18:47 Ubuntu-Nicolas kernel: [ 107.334947] type=1503 audit(1224184727.150:13): operation="socket_create" family="ash" sock_type="dgram" protocol=0 pid=7306 profile="/usr/sbin/cupsd" Oct 16 21:18:47 Ubuntu-Nicolas kernel: [ 107.334963] type=1503 audit(1224184727.150:14): operation="socket_create" family="x25" sock_type="seqpacket" protocol=0 pid=7306 profile="/usr/sbin/cupsd" Oct 16 21:20:05 Ubuntu-Nicolas kernel: [ 185.986062] process `skype' is using obsolete setsockopt SO_BSDCOMPAT Oct 16 23:42:32 Ubuntu-Nicolas kernel: [ 8732.264785] usb 8-5.2: reset high speed USB device using ehci_hcd and address 6 Oct 16 23:48:38 Ubuntu-Nicolas kernel: [ 9098.467084] phy0 -> rt2x00queue_write_tx_frame: Error - Arrived at non-free entry in the non-full queue 2. Oct 16 23:48:38 Ubuntu-Nicolas kernel: [ 9098.467086] Please file bug report to http://rt2x00.serialmonkey.com. Oct 16 23:48:38 Ubuntu-Nicolas kernel: [ 9098.467237] phy0 -> rt2x00queue_write_tx_frame: Error - Arrived at non-free entry in the non-full queue 2. Oct 16 23:48:38 Ubuntu-Nicolas kernel: [ 9098.467245] Please file bug report to http://rt2x00.serialmonkey.com. Oct 17 00:59:52 Ubuntu-Nicolas kernel: [13372.260761] usb 8-5.2: reset high speed USB device using ehci_hcd and address 6 Oct 17 03:17:22 Ubuntu-Nicolas kernel: [21622.260359] usb 8-5.2: reset high speed USB device using ehci_hcd and address 6 Oct 17 05:16:16 Ubuntu-Nicolas kernel: [28756.263388] usb 8-5.2: reset high speed USB device using ehci_hcd and address 6 Oct 17 06:16:22 Ubuntu-Nicolas kernel: [32362.261815] usb 8-5.2: reset high speed USB device using ehci_hcd and address 6 Oct 17 06:58:49 Ubuntu-Nicolas kernel: [34909.597926] wlan0: disassociating by local choice (reason=3) Oct 17 06:58:49 Ubuntu-Nicolas kernel: [34909.603414] wlan0: authenticate with AP f2:3f:8b:e3:17:f0 Oct 17 06:58:51 Ubuntu-Nicolas kernel: [34911.311171] ADDRCONF(NETDEV_UP): wlan0: link is not ready Oct 17 06:59:09 Ubuntu-Nicolas kernel: [34929.701532] wlan0: authenticate with AP f2:3f:8b:e3:17:f0 Oct 17 06:59:09 Ubuntu-Nicolas kernel: [34929.716670] wlan0: authenticated Oct 17 06:59:09 Ubuntu-Nicolas kernel: [34929.716679] wlan0: associate with AP f2:3f:8b:e3:17:f0 Oct 17 06:59:09 Ubuntu-Nicolas kernel: [34929.718795] wlan0: RX AssocResp from f2:3f:8b:e3:17:f0 (capab=0x411 status=0 aid=1) Oct 17 06:59:09 Ubuntu-Nicolas kernel: [34929.718801] wlan0: associated Oct 17 06:59:09 Ubuntu-Nicolas kernel: [34929.719626] ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready Oct 17 06:59:20 Ubuntu-Nicolas kernel: [34940.348013] wlan0: no IPv6 routers present Oct 17 07:12:53 Ubuntu-Nicolas kernel: [35753.446582] __ratelimit: 3 callbacks suppressed Oct 17 07:12:53 Ubuntu-Nicolas kernel: [35753.446591] compiz.real[6954]: segfault at 3f90011 ip 08055bfd sp bfa3b630 error 4 in compiz.real[8048000+34000] Oct 17 07:12:53 Ubuntu-Nicolas kernel: [35753.752108] wlan0: disassociating by local choice (reason=3) Oct 17 07:12:53 Ubuntu-Nicolas kernel: [35753.757093] wlan0: authenticate with AP f2:3f:8b:e3:17:f0 Oct 17 07:12:53 Ubuntu-Nicolas kernel: [35753.758853] wlan0: authenticated Oct 17 07:12:53 Ubuntu-Nicolas kernel: [35753.758859] wlan0: associate with AP f2:3f:8b:e3:17:f0 Oct 17 07:12:53 Ubuntu-Nicolas kernel: [35753.760986] wlan0: RX AssocResp from f2:3f:8b:e3:17:f0 (capab=0x411 status=0 aid=1) Oct 17 07:12:53 Ubuntu-Nicolas kernel: [35753.760989] wlan0: associated Oct 17 07:12:53 Ubuntu-Nicolas kernel: [35753.782524] wlan0: disassociating by local choice (reason=3) Oct 17 0