Aufwecken ging ja leider auch nicht, weil der iMac überhaupt nicht reagiert hat (weder auf Bewegen der Maus, Tastatur, noch beim Druecken des Ein-/Aus-Knopfes)
Sorry, ich hatte Dir die falschen Meldungen reinkopiert:
7/29/10 3:06:03 PM kernel AppleFWOHCI_AsyncReceive::waitForDMA - context not going inactive.
....
7/29/10 3:09:27 PM kernel AppleFWOHCI_AsyncTransmit::waitForDMA - context not going inactive.
7/29/10 4:48:19 PM kernel npvhash=4095
7/29/10 4:48:16 PM com.apple.launchctl.System[2] fsck_hfs: Volume is journaled. No checking performed.
7/29/10 4:48:16 PM com.apple.launchctl.System[2] fsck_hfs: Use the -f option to force checking.
7/29/10 4:48:18 PM com.apple.launchctl.System[2] launchctl: Please convert the following to launchd: /etc/mach_init.d/dashboardadvisoryd.plist
7/29/10 4:48:18 PM com.apple.launchd[1] (com.apple.blued) Unknown key for boolean: EnableTransactions
7/29/10 4:48:18 PM com.apple.launchd[1] (com.apple.RemoteDesktop.PrivilegeProxy) Unknown key for boolean: EnableTransactions
7/29/10 4:48:18 PM com.apple.launchd[1] (com.apple.usbmuxd) Unknown key for boolean: EnableTransactions
7/29/10 4:48:18 PM com.apple.launchd[1] (org.cups.cupsd) Unknown key: SHAuthorizationRight
7/29/10 4:48:18 PM com.apple.launchd[1] (org.x.privileged_startx) Unknown key for boolean: EnableTransactions
7/29/10 4:48:19 PM kextd[10] 425 cached, 0 uncached personalities to catalog
7/29/10 4:48:19 PM kernel hi mem tramps at 0xffe00000
7/29/10 4:48:19 PM kernel PAE enabled
7/29/10 4:48:19 PM kernel 64 bit mode enabled
7/29/10 4:48:19 PM kernel Darwin Kernel Version 9.8.0: Wed Jul 15 16:55:01 PDT 2009; root:xnu-1228.15.4~1/RELEASE_I386
7/29/10 4:48:19 PM kernel standard timeslicing quantum is 10000 us
7/29/10 4:48:19 PM kernel vm_page_bootstrap: 253378 free pages and 8766 wired pages
7/29/10 4:48:19 PM kernel mig_table_max_displ = 79
7/29/10 4:48:19 PM kernel 103 prelinked modules
7/29/10 4:48:19 PM kernel AppleACPICPU: ProcessorApicId=0 LocalApicId=0 Enabled
7/29/10 4:48:19 PM kernel AppleACPICPU: ProcessorApicId=1 LocalApicId=1 Enabled
7/29/10 4:48:19 PM kernel Loading security extension com.apple.security.TMSafetyNet
7/29/10 4:48:19 PM kernel calling mpo_policy_init for TMSafetyNet
7/29/10 4:48:19 PM kernel Security policy loaded: Safety net for Time Machine (TMSafetyNet)
7/29/10 4:48:19 PM kernel Loading security extension com.apple.nke.applicationfirewall
7/29/10 4:48:19 PM kernel Loading security extension com.apple.security.seatbelt
7/29/10 4:48:19 PM kernel calling mpo_policy_init for mb
7/29/10 4:48:19 PM kernel Seatbelt MACF policy initialized
7/29/10 4:48:19 PM kernel Security policy loaded: Seatbelt Policy (mb)
7/29/10 4:48:19 PM kernel Copyright (c) 1982, 1986, 1989, 1991, 1993
7/29/10 4:48:19 PM kernel The Regents of the University of California. All rights reserved.
7/29/10 4:48:19 PM kernel MAC Framework successfully initialized
7/29/10 4:48:19 PM kernel using 5242 buffer headers and 4096 cluster IO buffer headers
7/29/10 4:48:19 PM kernel IOAPIC: Version 0x20 Vectors 64:87
7/29/10 4:48:19 PM kernel ACPI: System State [S0 S3 S4 S5] (S3)
7/29/10 4:48:19 PM kernel mbinit: done
7/29/10 4:48:19 PM kernel Security auditing service present
7/29/10 4:48:19 PM kernel BSM auditing present
7/29/10 4:48:19 PM kernel rooting via boot-uuid from /chosen: 53C92892-E20B-3CFD-888B-3278CE7F9FA1
7/29/10 4:48:19 PM kernel Waiting on <dict ID="0"><key>IOProviderClass</key><string ID="1">IOResources</string><key>IOResourceMatch</key><string ID="2">boot-uuid-media</string></dict>
7/29/10 4:48:19 PM kernel BTCOEXIST on
7/29/10 4:48:19 PM kernel wl0: Broadcom BCM4328 802.11 Wireless Controller
7/29/10 4:48:19 PM kernel 5.10.91.21
7/29/10 4:48:19 PM kernel Got boot device = IOService:/AppleACPIPlatformExpert/PCI0/AppleACPIPCI/SATA@1F,2/AppleICH8AHCI/PRT0@0/IOAHCIDevice@0/AppleAHCIDiskDriver/IOAHCIBlockStorageDevice/IOBlockStorageDriver/WDC WD3200AAJS-40VWA0 Media/IOGUIDPartitionScheme/Customer@2
7/29/10 4:48:19 PM kernel BSD root: disk0s2, major 14, minor 2
7/29/10 4:48:19 PM kernel FireWire (OHCI) Lucent ID 5901 built-in now active, GUID 001e52fffe494a22; max speed s800.
7/29/10 4:48:19 PM kernel jnl: unknown-dev: replay_journal: from: 13416960 to: 18757632 (joffset 0x12851000)
7/29/10 4:48:19 PM kernel jnl: unknown-dev: journal replay done.
7/29/10 4:48:19 PM kernel AppleIntelCPUPowerManagement: initialization complete
7/29/10 4:48:19 PM kernel HFS: Removed 2 orphaned unlinked files or directories
7/29/10 4:48:19 PM kernel AppleYukon2: Marvell Yukon Gigabit Adapter 88E8055 Singleport Copper SA
7/29/10 4:48:19 PM kernel AppleYukon2: RxRingSize <= 1024, TxRingSize 256, RX_MAX_LE 1024, TX_MAX_LE 768, ST_MAX_LE 3328
7/29/10 4:48:19 PM kernel [Bluetooth::CSRHIDTransition] switchToHCIMode (legacy)
7/29/10 4:48:19 PM kernel [Bluetooth::CSRHIDTransition] transition complete.
7/29/10 4:48:19 PM kernel Jettisoning kernel linker.
7/29/10 4:48:19 PM kernel Resetting IOCatalogue.
7/29/10 4:48:19 PM kernel [HCIController][configurePM] power parent ready after 1 tries
7/29/10 4:48:19 PM kernel Matching service count = 0
7/29/10 4:48:19 PM kernel Matching service count = 0
7/29/10 4:48:19 PM kernel Matching service count = 0
7/29/10 4:48:19 PM kernel Matching service count = 0
7/29/10 4:48:19 PM kernel Matching service count = 0
7/29/10 4:48:19 PM kernel Matching service count = 0
7/29/10 4:48:19 PM kernel Matching service count = 1
7/29/10 4:48:19 PM kernel Previous Shutdown Cause: 0
7/29/10 4:48:19 PM kernel AppleTyMCEDriver:

robe(iMac7,1)
7/29/10 4:48:19 PM kernel AppleTyMCEDriver:

robe fails
7/29/10 4:48:19 PM kernel ** Device in slot: SLOT--1 **
7/29/10 4:48:23 PM bootlog[36] BOOT_TIME: 1280414891 0
7/29/10 4:48:23 PM fseventsd[27] event logs in /.fseventsd out of sync with volume. destroying old logs. (73437 12 79372)
7/29/10 4:48:23 PM DirectoryService[32] Launched version 5.8.1 (v514.27)
7/29/10 4:48:24 PM /System/Library/CoreServices/loginwindow.app/Contents/MacOS/loginwindow[23] Login Window Application Started -- Threaded auth