Folder Redirection

We recently implemented folder redirection and we've noticed that our network drives are temporarily losing connection or doesn’t show all the files in the directory for about 5-30 seconds.  We’ve also noticed that shortcuts on the desktop seem to change to random icons (see attached image).  I've looked at the server resources and they’re not maxing out and the server is staying responsive.  Does anyone know why this would be happening?

Server: Server 2008 Standard
Clients: Windows 7 Pro

Random Icon
jackperryAsked:
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yelbaglfCommented:
Those icons are being overlayed with the Windows Defender icon, and since you say you're losing network connectivity, I would disable Windows Defender.  Are you using any kind of AV software?

http://windows.microsoft.com/en-US/windows-vista/Turn-Windows-Defender-on-or-off
jackperryAuthor Commented:
It just happend to be the windows defender icon, it changes randomly.  We are using Avast! for antivirus.  
yelbaglfCommented:
You could try this:

Press the F5 key to refresh the icons in the current folder.
Close and then reopen a window that contains incorrect icons.
Restart your computer.
Re-create the ShellIconCache file. This file is re-created automatically when you change your display's color depth. Follow these steps to change your display's color depth to a new setting and then change it back to the original setting:
Right-click the desktop and then click Properties.
Click the Settings tab.
Change the color depth from the current setting to a new setting. For example, change from Highest (32 bit) to Lowest (16 bit).
Click Apply, and then click Yes to accept the changes.
Change the color depth back to its original setting.
Click Apply, and then click Yes to accept the changes.
Using Registry Editor, add the Max Cached Icons string value with a value data of 2000 to the following registry key, and then restart your computer:
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Explorer
If the icons are still incorrect, delete the ShellIconCache file. The Max Cached Icons value data range is between 100 and 4096. The default value is 500.

Taken from here:
http://support.microsoft.com/kb/132668

If the above doesn't work, I would delete the ShellIconCache file, change the color depth, and then reboot.
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jackperryAuthor Commented:
But it seems to happen when the user loses their network drives and then a new random icon appears. Which I think is happening because of some sort of "sync" by the folder redirection?

 Random Icon (Changed)
jackperryAuthor Commented:
Refreshing the desktop does seem to remove the icon, but only until the next time they lose their network drive.
jackperryAuthor Commented:
And when the network drive drops, it says CSC-CACHE for the status?
 Network Drive
yelbaglfCommented:
First:

1. Click the Start button or pearl
2. Search for 'Manage offline files'
3. View your offline files
4. Righ-click the cached files you want to delete, and click Delete offline copy.

There was a hotfix in Vista for this...I realize you are using Win 7, so make sure that you are fully patched.
http://support.microsoft.com/kb/938092

If this doesn't work, you can clear out the cache manually.  The files are here:
C:\Windows\CSC

Then, we need to figure out why you are losing network connectivity in the first place.  Does this happen randomly, or during peak hours?  Is it only network drives that lose access, or are there other network related issues during this time?  Are there any Events in the logs?

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jackperryAuthor Commented:
Disabling Offline Files fixed the issue with the icons and network loss.
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