Yet another "Fix" that breaks things. ever since application of this update, I get this from the system log-
Sep 17 14:24:39 Lloyd kernel[0]: USBF: 22.360 IOUSBPipe[0x6a4d840]:ClosePipe for address 2, ep 5 had a retain count > 1. Leaking a pipe
Sep 17 14:24:39 Lloyd kernel[0]: USBF: 22.416 IOUSBPipe[0x6a87ac0]:ClosePipe for address 2, ep 3 had a retain count > 1. Leaking a pipe
Sep 17 14:24:39 Lloyd kernel[0]: USBF: 22.416 IOUSBPipe[0x6a8ee40]:ClosePipe for address 2, ep 3 had a retain count > 1. Leaking a pipe
Sep 17 14:24:39 Lloyd kernel[0]: USBF: 22.419 IOUSBPipe[0x6b04540]:ClosePipe for address 2, ep 6 had a retain count > 1. Leaking a pipe
Sep 17 14:24:39 Lloyd kernel[0]: USBF: 22.421 IOUSBPipe[0x6a93cc0]:ClosePipe for address 2, ep 5 had a retain count > 1. Leaking a pipe
Sep 17 14:24:41 Lloyd kernel[0]: jnl: replay_journal: from: 192000 to: 258560 (joffset 0x11c000)
Sep 17 14:24:41 Lloyd diskarbitrationd[40]: disk1s10 hfs 5D5996A8-8252-3E30-944A-8F482C926065 OSX PPC /Volumes/OSX PPC
Sep 17 14:24:42 Lloyd kernel[0]: jnl: replay_journal: from: 8158208 to: 8249856 (joffset 0x11c000)
Sep 17 14:24:42 Lloyd diskarbitrationd[40]: disk1s12 hfs D4503E88-D0E2-3EC3-9A46-F0C82C0DDB19 OSX INTEL /Volumes/OSX INTEL
Sep 17 14:24:42 Lloyd kernel[0]: jnl: replay_journal: from: 16671232 to: 16762880 (joffset 0xdf0000)
Sep 17 14:24:42 Lloyd diskarbitrationd[40]: disk1s14 hfs D9C57F81-1BD4-3677-816F-AF5A138A7F6D BigSpace /Volumes/BigSpace
Sep 17 14:24:42 Lloyd mDNSResponder: NOTE: Wide-Area Service Discovery disabled to avoid crashing defective DNS relay 10.1.1.1.
Sep 17 14:25:40 Lloyd configd[38]: target=enable-network: disabled
Sep 17 14:27:03 Lloyd kernel[0]: USBF: 165.892 IOUSBPipe[0x6b17680]:ClosePipe for address 2, ep 3 had a retain count > 1. Leaking a pipe
Sep 17 14:27:03 Lloyd kernel[0]: USBF: 165.893 IOUSBPipe[0x6a59c00]:ClosePipe for address 2, ep 3 had a retain count > 1. Leaking a pipe
Sep 17 14:27:03 Lloyd kernel[0]: USBF: 165.896 IOUSBPipe[0x6b178c0]:ClosePipe for address 2, ep 6 had a retain count > 1. Leaking a pipe
Sep 17 14:27:03 Lloyd kernel[0]: USBF: 165.898 IOUSBPipe[0x6b17540]:ClosePipe for address 2, ep 5 had a retain count > 1. Leaking a pipe
Sep 17 14:27:03 Lloyd kernel[0]: IOAudioStream[0x6cace00]::processOutputSamples(0x6595e08) - Internal Error: No mix buffer
Sep 17 14:36:33 Lloyd kernel[0]: ** Didn't get the lock in usb completion!
Sep 17 14:36:33 Lloyd kernel[0]: ** Didn't get the lock in usb completion!

Simply put, Apple is no longer the trusted, reliable, 'works right out of the box' entity that it's publicity & marketing engine fostered over the years. Before this update, no problems. Now I get regular hangs in firefox, itunes - anything related to audio seems to trigger this. I have a digidesign Mbox2, & have updated all audio drivers. And, before anyone puts forward any well meaning suggestions about testing, plugging, unplugging etc., Why should I have to go through that? I pay good money for stuff that works. If I had a new TV or DVD player or dishwasher that caused me equivalent problems, it would go straight back to the shop along with a selection of sharp comments for the manufacturer. Computers are no different. Is Apple really giving a s**t anymore about QA?