Spacebar Will Not Comply

Question

My friend's MacMini's spacebar only seems to work on specific things like pressing Command-Spacebar for Spotlight and in the login window. I have already directed him to repair permissions and trash all preferences. Next thing that were going to do is reinstall OSX. Is there anything that will save him the trouble? Any more techniques? He has tried different keyboards, even buying a new one, but they all don't work.
His MacMini's specs (Direct from Apple's Support Page)
Mac mini (Early 2006)
1.5GHz Mac mini (MA205LL/A)
Processor 1.5GHz Intel Core Solo
L2 Cache 2MB Shared
System bus 667MHz
Memory 512MB of 667MHz DDR2 SDRAM (PC2-5300), supports up to 2GB Has 512RAM
Hard drive 60GB 5400-rpm Serial ATA2
Optical drive Slot-loading Combo drive (DVD-ROM/CD-RW)
Graphics Intel GMA950 graphics processor with 64MB of DDR2 SDRAM shared with main memory1
Ports One FireWire 400 port (8 watts); Four USB 2.0 ports (up to 480 Mbps); DVI output; VGA output (using included adapter); S-video and composite video output4
Audio Built-in speakers, combined optical digital audio input/audio line in, combined optical digital audio output/headphone out
Networking Built-in 10/100/1000BASE-T (Gigabit)
Wireless Built-in 54 Mbps AirPort Extreme Wi-Fi (802.11g)3; built-in Bluetooth 2.0+EDR (Enhanced Data Rate) module.
Are there any known issues about stuff like this?
Thanks for any help.
- Craig

Answer 1

oops, I guess he posted one himself:
http://discussions.apple.com/thread.jspa?threadID=942743&tstart=0
- Craig