Random sleep

[Chrisspy]

Starting about a week ago, randomly while typing the screen will go blank and the macbook with go into hibernation. Heres what my console looks like:

2012-11-26 12:27:20.000 AM kernel[0]: /drv/ MacModule.cpp:304 powerStateWillChangeTo: flags=4 stateNumber=2
2012-11-26 12:27:20.000 AM kernel[0]: /drv/ MacModule.cpp:309 powerStateWillChangeTo: found flag=kIOPMSleepCapability (4)
2012-11-26 12:27:22.000 AM kernel[0]: en1: BSSID changed to 00:1e:e5:69:be:79
2012-11-26 12:27:22.000 AM kernel[0]: wlEvent: en1 en1 Link DOWN virtIf = 0
2012-11-26 12:27:22.000 AM kernel[0]: AirPort: Link Down on en1. Reason 8 (Disassociated because station leaving).
2012-11-26 12:27:22.000 AM kernel[0]: en1::IO80211Interface:ostMessage bssid changed
2012-11-26 12:27:22.000 AM kernel[0]: /drv/ MacModule.cpp:304 powerStateDidChangeTo: flags=4 stateNumber=2
2012-11-26 12:27:22.000 AM kernel[0]: /drv/ MacModule.cpp:309 powerStateDidChangeTo: found flag=kIOPMSleepCapability (4)
2012-11-26 12:27:22.000 AM kernel[0]: hibernate_page_list_setall start 0xffffff80f4bb2000, 0xffffff80f4bf2000
2012-11-26 12:27:22.000 AM kernel[0]: hibernate_page_list_setall time: 341 ms
2012-11-26 12:27:22.000 AM kernel[0]: pages 768177, wire 277003, act 157581, inact 815, cleaned 0 spec 181, zf 3032, throt 0, could discard act 80343 inact 31789 purgeable 8467 spec 208966 cleaned 0
2012-11-26 12:27:22.000 AM kernel[0]: hibernate_page_list_setall found pageCount 438612
2012-11-26 12:27:22.000 AM kernel[0]: IOHibernatePollerOpen, ml_get_interrupts_enabled 0
2012-11-26 12:27:22.000 AM kernel[0]: IOHibernatePollerOpen(0)
2012-11-26 12:27:22.000 AM kernel[0]: encryptStart 13290
2012-11-26 12:27:22.000 AM kernel[0]: IOPolledInterface::checkForWork sw abort
2012-11-26 12:27:22.000 AM kernel[0]: IOPolledInterface::checkForWork[5] 0xe00002eb
2012-11-26 12:27:22.000 AM kernel[0]: PMStats: Hibernate write took 3 ms
2012-11-26 12:27:22.000 AM kernel[0]: all time: 3 ms, comp bytes: 0 time: 0 ms 0 Mb/s, crypt bytes: 184176 time: 0 ms 518 Mb/s,
2012-11-26 12:27:22.000 AM kernel[0]: image 0, uncompressed 0 (0), compressed 0 (0%), sum1 91d1877c, sum2 0
2012-11-26 12:27:22.000 AM kernel[0]: wired_pages_encrypted 0, wired_pages_clear 0, dirty_pages_encrypted 0
2012-11-26 12:27:22.000 AM kernel[0]: hibernate_write_image done(e00002eb)
2012-11-26 12:27:22.000 AM kernel[0]: sleep
2012-11-26 12:27:22.989 AM configd[17]: network changed: v4(en1-:192.168.1.100) DNS- Proxy- SMB
2012-11-26 12:27:23.018 AM awacsd[61]: InnerStore GetWakeInfoForZone: zero address for 1427131804.members.btmm.icloud.com.
2012-11-26 12:27:23.021 AM awacsd[61]: KV HTTP 0
2012-11-26 12:27:26.005 AM loginwindow[84]: ERROR | -[LWScreenLock(Private) screenIsLockedTimeExpired:] | No lock state found, use built in check
2012-11-26 12:27:26.000 AM kernel[0]: Wake reason: EC.PowerButton PWRB (User)


Im running an early 2012 macbook pro on 10.8.2 with the optical drive swapped out for a second hard drive. I have run hardware diagnostics and found no issues with tested hardware (logic board, ram, harddisk, etc).

Tried resetting SMC and PRAM but did not have any effect. Any ideas? Im trying to avoid doing a clean install until im sure its a software issue that cannot be easily repaired