Although it doesn't fit the date scenario, you didn't mention checking the temperature/fans, unless I completely overlooked it.
How frequently do you shutdown or at least hibernate so the system can "rest"? I don't mean the 108 reboots, I mean actual shutdown for a period of time.
Uptime
Current Session
Current Time: 4/25/2012 19:14:37
Current Uptime: 4487 sec (0 d, 01 h, 14 m, 47 s)
Last Boot Time: 4/25/2012 17:59:50
Last ShutDown Time: 4/25/2012 16:17:19
Uptime Statistics
First Boot Time: 8/25/2011 13:47:21
First Shutdown Time: 8/25/2011 06:59:19
Total Uptime: 18354469 sec (212 d, 10 h, 27 m, 49 s)
Total Downtime: 466560 sec (5 d, 09 h, 36 m, 00 s)
Longest Uptime: 724674 sec (8 d, 09 h, 17 m, 54 s)
Longest Downtime: 56674 sec (0 d, 15 h, 44 m, 34 s)
Total Reboots: 108
System Availability: 97.52%