I have an issue that has been boggling my IT department for several weeks now.

A client of mine is setup to synchronize his home drive on his laptop. He is
synching about 5 gigs of data. The problem occurs whenever he is in a
microsoft application. (outlook, excel, word) when he tries to save a
document, he will browse to his Home drive, and when he tries to click on a
folder or subfolder, he gets one of two errors: The folder H:\data\data isn't
accessible. The folder may be located in an unavailable location, protected
with a password, or the filename contains a / or \.
Now he gets this error when saving PDF's:
H:\data\data referes to a location that is unavailable. It could be on a
hard drive on this computer, or on a network. Check to make sure the disk is
properly inserted or that you are connected to the internet or oyur network
and try again. If it still cannot be located, the information might have been
moved to a different location.

This all started occuring when we converted our network from static to dhcp
over thanksgiving holiday. Now, I have since built an entire new laptop,
attempted to isolate the problem to one machine, but this happens at any
machine I set his profile up on. (his profile is NOT roaming) I have also
made sure I have all the latest office, and windows updates. I read somewhere
that sometimes the onboard NIC on the laptop can conflict with the one on the
docking station, so I disabled that with no luck. I've verified the problem
is not related to just our SAN or just his home drive by synchronizing data
from a regular network share and I still got the same errors. (So its not
just tied to his H drive) I've attempted all of this on a completely
different segment of the network. I also want to add that we did migrate the
user data to a different host server, but this was after the problem started
to occur. I've tried resetting permissions with no luck. I'm am seriously at
a loss as to what could be causing this. I have exausted all ideas in the
last month, and I want to say this is a microsoft bug.

The problem is so sporadic, I spent over an hour watching these messages
appear on just random folders in his H drive. Sometimes It will let me right
in the folder, other times I will get the error once, twice, or even up to 7
times before It finally lets me in. If I open up explorer and browse the
files, I get no errors at all. So this is only happening in the
open/save/save as window within the microsoft applications. If I pull the
laptop offline and try and open/save any document, I don't get the errors
anymore. Correct me if I'm wrong, but this sounds like a microsoft bug to me.

Please, any idea's would be greatly appriciated.