GPO over wireless network

I am now at the hair pulling stage:

We are a small school running an ICT suite with 15 wired desktops, a laptop trolley with 16 newish dell latitudes and windows 2008 server
The school ICT restrictions and software delivery are via GPO's - everything from desktop wallpaper to software delivery.
We now have a situation where the ICT wired PCs are stable and fine - all policies load
The laptops are a nightmare - sometimes the GPO loads, other times we have a black background and no access to network drives amongst other policies
If I check the gpo result - all have apparently applied
I have checked the driver (it is the latest for the wireless cards)
I have added "wait for network"
I have spend hours looking up this problem over the internet - there are many many suggestions and I have tried and failed with most of them - If I run a gpupdate /force - generally the laptops will load correctly - if they are left for a while, then some will load, some won't
The teachers are getting really frustrated - unfortunately I am not full time - I come in, get them to work and then a few days later I get phone calls saying that they are not working

Any help would be massively appreciated
jad2009Asked:
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amac81Commented:
I am wondering if there are connectivity issues and the slow link detection is stopping the processing.  Are there areas where the wireless signal is weak or slow due to weak signal strength?  Check this out about the slow link detection:  http://technet.microsoft.com/en-us/library/cc978717.aspx

Also the GPO logs on the individual machines may show what, if any, errors are being seen during GPO processing.
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jad2009Author Commented:
The wireless network was replaced 2 months ago and works well for teacher laptops - I am just remotely having a good look at the legacy GPOs that have been set up over time. The majority of the teachers gpos for set up are delivered via user level - these all work perfectly. The pupils have about 50% delivered on a user level and 50% on a computer level. I am wondering if it may be a good exercise to deliver less on a computer level.....
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ChrisCommented:
I would check to see if the wireless computers are connecting to the WiFi network before a user is logged in? Get one booted up and try an ping the name of the machine. Not sure how your WiFi is configured but if you are using NPS create a group(s) for your wireless stations and add it(them) to the allowed list.
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jad2009Author Commented:
Thanks I'll have a look at the network after half term and report back
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jad2009Author Commented:
Finally have resolved this - I has been painful. Added the wait for network via GPO. What appears to have worked is removing all of the dell software relating to the wireless card and just adding the broadcom driver for that card - bingo!
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jad2009Author Commented:
Resolved myself
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BerryGardensCommented:
This was useful thanks.
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