Hello, All:

I just need to know what these console codes mean and if someone externally has been trying to access my iMac remotely.

Here are all the recent 'wake' reports. I've been putting my system to sleep and it's been waking at odd hours...

12-04-02 12:09:51.000 AM kernel: Wake reason: RTC (Alarm)
12-04-02 12:09:51.000 AM kernel: 1785.831289: ar9300WowWakeUp: Skip PCIE WA programming
12-04-02 1:58:14.000 AM kernel: Wake reason: RTC (Alarm)
12-04-02 1:58:14.000 AM kernel: 1812.867854: ar9300WowWakeUp: Skip PCIE WA programming
12-04-02 3:46:40.000 AM kernel: Wake reason: RTC (Alarm)
12-04-02 3:46:40.000 AM kernel: 1852.001406: ar9300WowWakeUp: Skip PCIE WA programming
12-04-02 5:34:31.000 AM kernel: Wake reason: RTC (Alarm)
12-04-02 7:21:48.000 AM kernel: Wake reason: RTC (Alarm)
12-04-02 9:08:35.000 AM kernel: Wake reason: RTC (Alarm)
12-04-02 10:54:49.000 AM kernel: Wake reason: RTC (Alarm)
12-04-02 12:40:30.000 PM kernel: Wake reason: RTC (Alarm)
12-04-02 2:25:41.000 PM kernel: Wake reason: RTC (Alarm)
12-04-02 4:10:19.000 PM kernel: Wake reason: RTC (Alarm)
12-04-02 5:03:11.000 PM kernel: Wake reason: EHC2
12-04-02 5:03:11.000 PM kernel: The USB device HubDevice (Port 1 of Hub at 0xfa000000) may have caused a wake by issuing a remote wakeup (2)
12-04-02 5:03:11.000 PM kernel: The USB device BRCM2046 Hub (Port 1 of Hub at 0xfa100000) may have caused a wake by issuing a remote wakeup (3)
12-04-02 5:03:12.000 PM kernel: The USB device Bluetooth USB Host Controller (Port 1 of Hub at 0xfa110000) may have caused a wake by issuing a remote wakeup (3)
12-04-02 6:38:31.000 PM kernel: Wake reason: EHC2
12-04-02 6:38:31.000 PM kernel: The USB device HubDevice (Port 1 of Hub at 0xfa000000) may have caused a wake by issuing a remote wakeup (2)
12-04-02 6:38:31.000 PM kernel: 3478.178496: ar9300WowWakeUp: Skip PCIE WA programming
12-04-02 6:38:31.000 PM kernel: The USB device BRCM2046 Hub (Port 1 of Hub at 0xfa100000) may have caused a wake by issuing a remote wakeup (3)
12-04-02 6:38:31.000 PM kernel: The USB device Bluetooth USB Host Controller (Port 1 of Hub at 0xfa110000) may have caused a wake by issuing a remote wakeup (3)
12-04-02 8:11:45.000 PM kernel: Wake reason: EHC2
12-04-02 8:11:45.000 PM kernel: The USB device HubDevice (Port 1 of Hub at 0xfa000000) may have caused a wake by issuing a remote wakeup (2)
12-04-02 8:11:45.000 PM kernel: 7760.449820: ar9300WowWakeUp: Skip PCIE WA programming
12-04-02 8:11:45.000 PM kernel: The USB device BRCM2046 Hub (Port 1 of Hub at 0xfa100000) may have caused a wake by issuing a remote wakeup (3)
12-04-02 8:11:45.000 PM kernel: The USB device Bluetooth USB Host Controller (Port 1 of Hub at 0xfa110000) may have caused a wake by issuing a remote wakeup (3)
12-04-02 9:44:28.000 PM kernel: Wake reason: EHC2
12-04-02 9:44:28.000 PM kernel: The USB device HubDevice (Port 1 of Hub at 0xfa000000) may have caused a wake by issuing a remote wakeup (2)
12-04-02 9:44:28.000 PM kernel: 13011.322286: ar9300WowWakeUp: Skip PCIE WA programming
12-04-02 9:44:28.000 PM kernel: The USB device BRCM2046 Hub (Port 1 of Hub at 0xfa100000) may have caused a wake by issuing a remote wakeup (3)
12-04-02 9:44:28.000 PM kernel: The USB device Bluetooth USB Host Controller (Port 1 of Hub at 0xfa110000) may have caused a wake by issuing a remote wakeup (3)
12-04-03 2:18:29.000 AM kernel: Wake reason: EHC2
12-04-03 2:18:29.000 AM kernel: The USB device HubDevice (Port 1 of Hub at 0xfa000000) may have caused a wake by issuing a remote wakeup (2)
12-04-03 2:18:29.000 AM kernel: 29361.146198: ar9300WowWakeUp: Skip PCIE WA programming
12-04-03 2:18:29.000 AM kernel: The USB device BRCM2046 Hub (Port 1 of Hub at 0xfa100000) may have caused a wake by issuing a remote wakeup (3)
12-04-03 2:18:29.000 AM kernel: The USB device Bluetooth USB Host Controller (Port 1 of Hub at 0xfa110000) may have caused a wake by issuing a remote wakeup (3)
12-04-03 3:11:09.000 AM kernel: Wake reason: EHC2
12-04-03 3:11:09.000 AM kernel: The USB device HubDevice (Port 1 of Hub at 0xfa000000) may have caused a wake by issuing a remote wakeup (2)
12-04-03 3:11:09.000 AM kernel: 30111.489212: ar9300WowWakeUp: Skip PCIE WA programming
12-04-03 3:11:09.000 AM kernel: The USB device BRCM2046 Hub (Port 1 of Hub at 0xfa100000) may have caused a wake by issuing a remote wakeup (3)
12-04-03 3:11:09.000 AM kernel: The USB device Bluetooth USB Host Controller (Port 1 of Hub at 0xfa110000) may have caused a wake by issuing a remote wakeup (3)
12-04-03 5:13:32.000 AM kernel: Wake reason: RTC (Alarm)
12-04-03 5:13:32.000 AM kernel: 30978.457533: ar9300WowWakeUp: Skip PCIE WA programming
12-04-03 7:01:56.000 AM kernel: Wake reason: RTC (Alarm)
12-04-03 7:01:56.000 AM kernel: 31005.492730: ar9300WowWakeUp: Skip PCIE WA programming
12-04-03 8:50:23.000 AM kernel: Wake reason: RTC (Alarm)
12-04-03 8:50:23.000 AM kernel: 31044.725853: ar9300WowWakeUp: Skip PCIE WA programming
12-04-03 10:38:14.000 AM kernel: Wake reason: RTC (Alarm)
12-04-03 11:56:13.000 AM kernel: Wake reason: EHC2
12-04-03 11:56:13.000 AM kernel: The USB device HubDevice (Port 1 of Hub at 0xfa000000) may have caused a wake by issuing a remote wakeup (2)
12-04-03 11:56:13.000 AM kernel: The USB device BRCM2046 Hub (Port 1 of Hub at 0xfa100000) may have caused a wake by issuing a remote wakeup (3)
12-04-03 11:56:13.000 AM kernel: The USB device Bluetooth USB Host Controller (Port 1 of Hub at 0xfa110000) may have caused a wake by issuing a remote wakeup (3)

I appreciate everyone's help.
I just need to know if there's anything to worry about, if my computer's been hacked and if I need to re-format my entire system.
I'm running OS X 10.7.3 on an iMac 3.1GHz Intel Core i5.
Thanks.
:o

Some things to consider...

- USB devices may send a little jolt through the line from time to time and cause your computer to wake up (like clicking the mouse button).
- in System Preferences--> Energy Saver--> Power Adapter, is "Wake for Network Access" checked? If so, uncheck it (if you don't know what this is, you don't need it turned on) (here's an Apple Support Community thread (https://discussions.apple.com/thread/3247367?start=0&tstart=0)on the same issue, noting that this worked for them)

Some things to consider...

- USB devices may send a little jolt through the line from time to time and cause your computer to wake up (like clicking the mouse button).
- in System Preferences--> Energy Saver--> Power Adapter, is "Wake for Network Access" checked? If so, uncheck it (if you don't know what this is, you don't need it turned on) (here's an Apple Support Community thread (https://discussions.apple.com/thread/3247367?start=0&tstart=0)on the same issue, noting that this worked for them)

Thanks!
I'll look into your suggestion!

And yet another case of "infection" debunked.