Why does SCCM client Temporary Program Download Folder change location

I have been having problems with SCCM for a while and think I have managed a solution to getting it installed,  Automatic client push still will not work for some reason but I have a way of getting the client on and to start with it looks like they are working fine.

However after a while the Current location for the Temporary Program Download Folder on the clients changes from C:\WINDOWS\system32\CCM\Cache to C:\WINNT\system32\CCM\cache
and then seems to stop communicating.  Can anyone explain this?

A little extra detail:
The servers seem to work fine and automatic push install works with them as well,  they are on the same subnet as the SCCM server could this be the reason and if so how do I fix this.
The DHCP is on a different server to the SCCM and WDS in case this makes a difference and option 60, 66, and 67 need setting if so what should these be?
WNottsCAsked:
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anubhavsharma18Commented:
On client machine

click Start, click Run, type sysdm.cpl

In the System Properties dialog box, click the Advanced tab, and then click
Environment Variables.
Under System Variables, click windir, and then click Edit.

Note You may have to move the scroll box next to the list to see this entry.
In the Variable value box, capitalize the first letter, and then click OK.
For example, change "c:\windows" to "C:\windows."

Click OK OK

Restart the computer to make sure that the new environment variable takes
effect.

Try this on single computer first, hopefully  this will fix the issue

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WNottsCAuthor Commented:
this did not seem to make any difference where would it be picking the winNT from is it trying to get this from the server?  On some machines it works fine  with the %windows root% (or something like that) but on others it then reverts back after a couple of days to the winnt
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anubhavsharma18Commented:
Check this out
http://www.myitforum.com/forums/m_147938/printable.htm
Same issue got resolved by the local accounts "SYSTEM", "NETWORK SERVICE" and "SERVICE" to the administrators group

If it is %windows root% then W should be capital so it should be %Windows root%, it might also be the reason
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anubhavsharma18Commented:
Please upload the execmgr.log file
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WNottsCAuthor Commented:
hope this will explain where it is going wrong not much in it
execmgr.log
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JonLambertCommented:
From the log file it looks like the client is not installed properly (or not in a site boundary), can you upload the clientIDManagerStartup.log file and LocationServices.log file.
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