Vista SP3? Could be part of the problem. It's not real.

http://www.vistax64.com/windows-upda...-pack-3-a.html

Also mentioned here:

http://forum.lowyat.net/topic/1031116

At least one suspected cause is installing an SP2 beta version. Needs to be
uninstalled in order to install the released version of SP2.

There's no such temp file in my Vista HE so I've no real clue as to what
program is creating it. Very few references to "mnc" but one app that I
found using those letters as a file extension is My Notes Center. It
apparently creates an open-ended data base file with .mnc extension. If the
app is installed, speculating that mnc82DB.tmp could be one of its temp
files? In any case, you could try deleting the mnc82DB.tmp file and then
try opening the smaller recreated version in a text editor to look for any
entries within the file that might identify the culprit program.

"Oliver Costich" <oc@5cats.net> wrote in message
news:5gd645ld2tud10h70e58628sin30i32nq5@4ax.com...
> On Wed, 24 Jun 2009 21:05:45 -0700, "Spirit" <noone@localhost> wrote:
>
>>Look in Task Manager for something suspicious.
>>
>>There are viruses that write huge files to consume space.
>>Scan your computer with several online virus programs.
>>
>>http://www.google.com/search?hl=en&q...anners+&aqi=g2
>
> Already used several of these and they found nothing. If it were a
> virus, I assume some of these would have the signature since it's been
> around several weeks.
>>
>>"Oliver Costich" <oc@5cats.net> wrote in message
>>news:fqs545t8fed29opnd34n0q1uall2onqv1s@4ax.com. ..
>>> Severl weeks ago, I got a warning that there was no more space on C:,
>>> my system partition. Properties showed 0 free space. I tracked down
>>> the problem to a file named mnc82DB.tmp, which was about 50GB. It was
>>> in the folder users\owner\appdata\local\temp. I have no idea where it
>>> came from and Google has no entries if I search on that file name.
>>> Trying to delete it fails, saying that it is open in another program.
>>> Rebooting and then deleting it fixes it....
>>>
>>> ...Temporarily. Today it came back. Same issues. It's very annoying
>>> sice if I try to print something I will lose if I reboot, it won't do
>>> it (0 free space). Another weirdness is that if I try to type
>>> something into the Firefox Goggle engine, the letters are entered in
>>> reverse order.
>>>
>>> Anyone have any idea what in the world this is? The OS is Vista
>>> Business x64 SP3.