Suddenly sleep or hibernate mode macbook 5.1 and wake up

Hello I have a macbook 5.1 and I have a problem because when I am working with it sometimes it goes to sleepmode or hibernate and wake in seconds.
I have copy the logs registry, the macbook is update,
I will copy down the registry here:
MENSAJE DE  DIAGNÓSTICO
Message: loginwindow SleepWakeCallback WILL sleep
PID: 43
ReadGID: 80
Sender: loginwindow
Time: 2013-05-12 21:59:40 +0200
com.apple.message.domain: com.apple.loginwindow.logs
com.apple.message.result: noop
com.apple.message.signature: will sleep event received
com.apple.message.uuid: 41213C51-043B-485A-B4E1-998F8ECF64F0
Message: netbiosd lifecycle event tracer
PID: 176
ReadGID: 80
Sender: netbiosd
Time: 2013-05-12 21:59:40 +0200
com.apple.message.domain: com.apple.netbiosd.lifecycle
com.apple.message.result: noop
com.apple.message.signature: sleep
Message: Sleep: Success - BATT 96 - Clamshell Sleep
PID: 18
ReadGID: 80
Sender: powerd
Time: 2013-05-12 21:59:40 +0200
com.apple.message.domain: com.apple.powermanagement.sleep
com.apple.message.result: Success
com.apple.message.signature: Success
com.apple.message.uuid: 41213C51-043B-485A-B4E1-998F8ECF64F0
com.apple.message.value: 0
com.apple.powermanagement: pmlog
Message: loginwindow SleepWakeCallback will power on, Currenttime:5/12/2013 9:59:44.007 p.m. - Waketime:5/12/2013 9:59:44.000 p.m. = Deltatime:0.007281959
PID: 43
ReadGID: 80
Sender: loginwindow
Time: 2013-05-12 21:59:44 +0200
com.apple.message.domain: com.apple.loginwindow.logs
com.apple.message.result: noop
com.apple.message.signature: will power on event received
com.apple.message.uuid: 41213C51-043B-485A-B4E1-998F8ECF64F0
com.apple.message.value: 0.007281959
com.apple.message.value2: 0
Message: Wake: Success - BATT 96 - EC LID0
PID: 18
ReadGID: 80
Sender: powerd
Time: 2013-05-12 21:59:46 +0200
com.apple.message.domain: com.apple.powermanagement.wake
com.apple.message.result: Success
com.apple.message.signature: Success
com.apple.message.uuid: 41213C51-043B-485A-B4E1-998F8ECF64F0
com.apple.powermanagement: pmlog
Message: netbiosd lifecycle event tracer
PID: 176
ReadGID: 80
Sender: netbiosd
Time: 2013-05-12 21:59:46 +0200
com.apple.message.domain: com.apple.netbiosd.lifecycle
com.apple.message.result: noop
com.apple.message.signature: wake
Message: netbiosd lifecycle event tracer
PID: 176
ReadGID: 80
Sender: netbiosd
Time: 2013-05-12 21:59:46 +0200
com.apple.message.domain: com.apple.netbiosd.lifecycle
com.apple.message.result: noop
com.apple.message.signature: network change
Message: packets netbiosd discarded in the last 3600 secs
PID: 176
ReadGID: 80
Sender: netbiosd
Time: 2013-05-12 21:59:46 +0200
com.apple.message.domain: com.apple.netbiosd.packets
com.apple.message.result: noop
com.apple.message.signature: discarded
com.apple.message.value: 0
Message: packets netbiosd processed in the last 3600 secs
PID: 176
ReadGID: 80
Sender: netbiosd
Time: 2013-05-12 21:59:46 +0200
com.apple.message.domain: com.apple.netbiosd.packets
com.apple.message.result: noop
com.apple.message.signature: processed
com.apple.message.value: 0
Message: unicast packets netbiosd sent in the last 3600 secs
PID: 176
ReadGID: 80
Sender: netbiosd
Time: 2013-05-12 21:59:46 +0200
com.apple.message.domain: com.apple.netbiosd.packets
com.apple.message.result: noop
com.apple.message.signature: unicast
com.apple.message.value: 0
Message: broadcast packets netbiosd sent in the last 3600 secs
PID: 176
ReadGID: 80
Sender: netbiosd
Time: 2013-05-12 21:59:46 +0200
com.apple.message.domain: com.apple.netbiosd.packets
com.apple.message.result: noop
com.apple.message.signature: broadcast
com.apple.message.value: 0
REGISTRO KERNEL
ay 12 21:59:41 MacBook-de-Omar kernel[0]: hibernate image path: /var/vm/sleepimage
May 12 21:59:41 MacBook-de-Omar kernel[0]: sizeof(IOHibernateImageHeader) == 512
May 12 21:59:41 MacBook-de-Omar kernel[0]: Opened file /var/vm/sleepimage, size 2147483648, partition base 0x0, maxio 400000 ssd 0
May 12 21:59:41 MacBook-de-Omar kernel[0]: hibernate image major 14, minor 0, blocksize 512, pollers 5
May 12 21:59:41 MacBook-de-Omar kernel[0]: hibernate_alloc_pages flags 00000000, gobbling 0 pages
May 12 21:59:41 MacBook-de-Omar kernel[0]: hibernate_setup(0) took 0 ms
May 12 21:59:41 MacBook-de-Omar kernel[0]: 00000000  00000020  NVEthernet::setLinkStatus - not Active
May 12 21:59:41 MacBook-de-Omar kernel[0]:
May 12 21:59:42 MacBook-de-Omar kernel[0]: hibernate_page_list_setall start 0xffffff8030ded000, 0xffffff8030dfc000
May 12 21:59:42 MacBook-de-Omar kernel[0]: hibernate_page_list_setall time: 93 ms
May 12 21:59:42 MacBook-de-Omar kernel[0]: pages 314615, wire 48301, act 45575, inact 348, spec 68, zf 0, throt 0, could discard act 36527 inact 16294 purgeable 2268 spec 165234
May 12 21:59:42 MacBook-de-Omar kernel[0]: hibernate_page_list_setall found pageCount 94292
May 12 21:59:42 MacBook-de-Omar kernel[0]: IOHibernatePollerOpen, ml_get_interrupts_enabled 0
May 12 21:59:42 MacBook-de-Omar kernel[0]: IOHibernatePollerOpen(0)
May 12 21:59:42 MacBook-de-Omar kernel[0]: IOPolledInterface::checkForWork[5] 0xe00002eb
May 12 21:59:42 MacBook-de-Omar kernel[0]: PMStats: Hibernate write took 3 ms
May 12 21:59:42 MacBook-de-Omar kernel[0]: all time: 3 ms, comp bytes: 0 time: 0 ms 0 Mb/s, crypt bytes: 0 time: 0 ms 0 Mb/s,
May 12 21:59:42 MacBook-de-Omar kernel[0]: image 0, uncompressed 0 (0), compressed 0 (0%), sum1 49c0ead1, sum2 0
May 12 21:59:42 MacBook-de-Omar kernel[0]: wired_pages_encrypted 0, wired_pages_clear 0, dirty_pages_encrypted 0
May 12 21:59:42 MacBook-de-Omar kernel[0]: hibernate_write_image done(e00002eb)
May 12 21:59:42 MacBook-de-Omar kernel[0]: sleep
May 12 21:59:44 MacBook-de-Omar kernel[0]: Wake reason: EC LID0
May 12 21:59:44 MacBook-de-Omar kernel[0]: HID tickle 66 ms
May 12 21:59:44 MacBook-de-Omar kernel[0]: Previous Sleep Cause: 5
May 12 21:59:44 MacBook-de-Omar kernel[0]: AppleUSBMultitouchDriver::validateChecksum - 150-byte packet checksum is incorrect (expected 0x1b23, checksum bytes were 0x1103)
May 12 21:59:45 MacBook-de-Omar kernel[0]: 00000000  00000020  NVEthernet::setLinkStatus - not Active
REGISTRO DE LA GESTION DE ENERGIA
* Domain: sleep
- Message: Sleep: Success - BATT 96 - Clamshell Sleep
- Time: 12/05/13 21:59:40 GMT+0
- Signature: Success
- UUID: 41213C51-043B-485A-B4E1-998F8ECF64F0
- Result: Success
- Sleep count : 0
* Domain: wake
- Message: Wake: Success - BATT 96 - EC LID0
- Time: 12/05/13 21:59:46 GMT+0
- Signature: Success
- UUID: 41213C51-043B-485A-B4E1-998F8ECF64F0
- Result: Success

I think I have sloved the problem by installing the insomniax app.

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    I just repalced a busted screen on my Macbook 13"(white late early 2008) after it had falledn and broken the lcd screen.   Everything went fine and the parts all went back together perfectly and without any uncertainty with teh exception of the small magnet in the left side of the screen frame. 
    Now wehn I power on the Macbook the screen turns on for about three seconds then goes black. At first I thought it was not booting at all but after I walked away and came back to play with it I found that it finished booting up when the screen was closed. When I opened the screen I saw the desktop for a few seconds then the screen goes to sleep.  I can repeat this over and over all day long. 
    It looks like it is asleep when the screen is open but wakes up when the screen closes.  I know there is a Reed switch that controls this.  I moved the little magnet back and froth several times and any time it approaches the right area of the logic board the screen wakes up for a few seconds then goes black again. 
    Is there a reset that can be done to try and knock it out of this backwards mode?  (I have tried Command, Option, P, R while booting but no success)
    Is it plssible that I am just holding the magenet in the incorrect orientation?  (I've tried turning it a few different ways)
    Is it possible that the fall caused something to be damaged other than the screen?  (can't imagine a Reed switch going bad due to being bumped)
    Any advice would be great.  Thanks!
    Doug

    Try Resetting the System Management Controller (SMC)
    slowly starts back up
    How much free space on the startup disk?
    Right or control click the MacintoshHD icon. Click Get Info. In the Get Info window you will see Capacity and Available. Make sure you always have a minimum of 15% free disk space.

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