Internal keyboard flaking out

Hi,

Apple replaced my keyboard a couple weeks ago, and now occasionally the internal keyboard and trackpad stop working (external stuff continues to work flawlessly). I have messages like the following in my Console:

2/1/2009 5:34:39 AM kernel USBF: 5552.759 AppleUSBUHCI[0x6cea000]::Found a transaction which hasn't moved in 5 seconds on bus 0x5d, timing out! (Addr: 0, EP: 0)
2/1/2009 5:34:45 AM kernel USBF: 5558.759 AppleUSBUHCI[0x6cea000]::Found a transaction which hasn't moved in 5 seconds on bus 0x5d, timing out! (Addr: 0, EP: 0)
2/1/2009 5:34:51 AM kernel USBF: 5564.759 AppleUSBUHCI[0x6cea000]::Found a transaction which hasn't moved in 5 seconds on bus 0x5d, timing out! (Addr: 0, EP: 0)
2/1/2009 5:34:57 AM kernel USBF: 5570.759 AppleUSBUHCI[0x6cea000]::Found a transaction which hasn't moved in 5 seconds on bus 0x5d, timing out! (Addr: 0, EP: 0)
2/1/2009 5:34:57 AM kernel USBF: 5570.792 [0x6dd8800] The IOUSBFamily is having trouble enumerating a USB device that has been plugged in. It will keep retrying. (Port 1 of hub @ location: 0x5d000000)
2/1/2009 5:35:03 AM kernel USBF: 5576.760 AppleUSBUHCI[0x6cea000]::Found a transaction which hasn't moved in 5 seconds on bus 0x5d, timing out! (Addr: 0, EP: 0)
2/1/2009 5:35:09 AM kernel USBF: 5582.760 AppleUSBUHCI[0x6cea000]::Found a transaction which hasn't moved in 5 seconds on bus 0x5d, timing out! (Addr: 0, EP: 0)
2/1/2009 5:35:15 AM kernel USBF: 5588.760 AppleUSBUHCI[0x6cea000]::Found a transaction which hasn't moved in 5 seconds on bus 0x5d, timing out! (Addr: 0, EP: 0)
2/1/2009 5:35:21 AM kernel USBF: 5594.760 AppleUSBUHCI[0x6cea000]::Found a transaction which hasn't moved in 5 seconds on bus 0x5d, timing out! (Addr: 0, EP: 0)
2/1/2009 5:35:27 AM kernel USBF: 5600.761 AppleUSBUHCI[0x6cea000]::Found a transaction which hasn't moved in 5 seconds on bus 0x5d, timing out! (Addr: 0, EP: 0)
2/1/2009 5:35:33 AM kernel USBF: 5606.761 AppleUSBUHCI[0x6cea000]::Found a transaction which hasn't moved in 5 seconds on bus 0x5d, timing out! (Addr: 0, EP: 0)
2/1/2009 5:35:39 AM kernel USBF: 5612.761 AppleUSBUHCI[0x6cea000]::Found a transaction which hasn't moved in 5 seconds on bus 0x5d, timing out! (Addr: 0, EP: 0)
2/1/2009 5:35:45 AM kernel USBF: 5618.762 AppleUSBUHCI[0x6cea000]::Found a transaction which hasn't moved in 5 seconds on bus 0x5d, timing out! (Addr: 0, EP: 0)
2/1/2009 5:35:46 AM kernel USBF: 5619.994 [0x6dd8800] The IOUSBFamily was not able to enumerate a device.


And System Profiler shows this:

Apple Internal Keyboard / Trackpad:

Product ID: 0x021a
Vendor ID: 0x05ac (Apple Inc.)
Version: 0.18
Speed: Up to 12 Mb/sec
Manufacturer: Apple Computer
Location ID: 0x5d200000
Current Available (mA): 500
Current Required (mA): 40


Is there anything I can do, or do you guys think this is a hardware issue?

Thank you!