Satellite L850-13R wakes up from standby with no reason

My L850 wakes up from standby every 10-20 minutes and after some time goes to standby again.
All power options are set as they should be (that means no wake on battery and even no wake up on power).
Problem is that this is my business notebook and I moves around with me so I could expect HD errors, not to mention battery life (I found it with dead battery this morning).
I have the latest firmware available (1.60)...
Anybody else facing this problem ?

In case anybody has similar problems one of the solutions could be:
IN registry look for
HKLM\System\CurrentControlSet\Control\CrashControl \DumpFilters
where you'll find a list of drivers that can possibly prevent standby (dumpfve.sys seems to always be there so don't touch it).
For other drivers remove the programs that installed them (I had MfeEpeHb.sys) or
do something not recommended and remove the lines with drivers you're suspecting prevent successful hibernation).
Eg. modify DumpFilters from
[DumpFilters]
MfeEpeHb.sys
dumpfve.sys
to:
[DumpFilters]
dumpfve.sys
That did the trick for me.
Hibernation tested and works without any problem

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sorry for the delay, but I was on a business trip.
@Bsteely: Sometimes it wakes up immediately because of loosing connection to the keaboard when I send it to sleep. I suppose at the beginning of the sleep mode it into sleep mode, the keaboard connection is closed, then the keyboard "thinks" there is a problem and sends a message to the mini and the mini just wakes up again showing that the connection to the keyboard was lost but established again! This even happened as I had unselected the checkbox "Allow Bluetooth devices to wake up this computer" in Preferences -> Bluetooth -> Advanced.
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Well, I will try the update as soon as I can. By now I have no external harddisk to first save my data before doing the big update. But I am going to buy one soon.
Well turning off the monitor is OK, but the harddisk can wake up anytime while the mini is turned on as the OS might need to do something from time to time. And I don't want my computer to consume electricity even if it is such a small one like the mini. I'm a kind of green dude (but not from Mars ). And the sleep mode is interesting for me as I have very often many different Internet sites and some applications running, so I don't need to close them before turning off and open all of them again when turning on the mini.
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bump

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[Satellite L850-138 drivers|http://www.toshiba.es/innovation/jsp/autoDetect.do?service=ES&ACTION=PROCESS_DETECTION& TYPE=FORWARD&SOURCE=SMP&COUNTRY=217&QSA=TRUE&MODEL =SATELLITE+L850-138&SERIAL=5C205022R&service=ES&LOCALE=&OSBUILD=76 00&SUB_TYPE=SMP&OSBITSIZE=64&PANUMBER=PSKDLE-01S002CE&ERROR=0]
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Blue ray disc player
card reader
chipset utilityapid storage technology driver
display driver
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webam driver
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[q]
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[/q]
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Hi
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Satellite L850-13R wakes up from standby with no reason

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