Uninstall Airport extreme 2008-004 update and go back to previous version

Question

Hello
This morning I installed the airport extreme 2008-004 update. Since then, I have not been able to access the internet when my VPN (Check Point) is active. I can access the internet if I "stop" the VPN. I use a Netgear WNR834M router and I have not had problems between this router and the AirBook before. Even when I am unable to access the internet, it appears that I am connected to the wireless network. I have stopped and started modem, router, and Mac several times, to no avail.
I had a good deal of trouble with a VPN before, and rather than attempting to fix this, I would like to just uninstall the update and restore what I had before. Is there an easy way to do this?
Thank you very much

Answer 1

Warren,
If you haven't yet, try these suggestions. They have worked for others.
*_Slow & Dropped Internet Connection After Airport Update_*
The suggestions below have recently helped others after a System or Airport update. Consider each topic separately, If one does not resolve your issue, move on to the next one.
*Reset/Change DNS Settings*
Launch Airport Utility.
Select Airport device on left.
Click "Manual Setup".
Select "Internet" from the toolbar above.
What's listed for "DNS Server(s):"? Try putting in these servers from OpenDNS
208.67.222.222
208.67.220.220
Click "Update".
Next, on all Macs affected, launch System Prefs --> Network Prefs.
Select the service you usually connect with on the left (Airport or Ethernet).
Then click, "Advanced...".
Click the "DNS" tab.
What's listed for "DNS Server(s):"? Usually "10.0.1.1" will be listed first in gray. This refers back to the settings in the Airport Utility.
Nevertheless, it doesn't hurt to add the DNS servers noted above here as well.
Click "OK" then click "Apply".
Finally, reboot your Mac.
Now see if you have internet access all around.
*Reset Airport Service*
Launch System Preferences --> Network Preferences.
Highlight the Airport Service on the left.
Click the Action menu (tiny gear button) in the lower left.
Select "Make Service Inactive".
Then select "Make Service Active".
Click "Apply".
*Delete & Add Airport Service*
Launch System Preferences --> Network Preferences.
Highlight the Airport Service on the left.
Click the “-” button in the lower left to remove the Airport Service.
Next, click the “+” button and add an Airport Service.
Click “Apply”.
Note: Removing the AirPort interface resets your preferred AirPort networks.  You will need to add preferred networks again.
*Reset Network/Airport Settings*
1. Go to Macintosh HD --> Library --> Preferences --> SystemConfiguration Folder
Drag the following files to the desktop:
com.apple.airport.preferences.plist
com.apple.network.identification.plist
NetworkInterfaces.plist
preferences.plist
Restart your Mac.
Go System Preferences --> Network.
From the “Location” menu select “Edit Locations”.
Click the “+” button and name it “Home” or “My Network”.
Click “Done”.
Highlight “Airport” on the left, and verify that your network appears beside “Network Name”.
Click “Apply”.
Click “Advanced…”.
Click the “Airport” tab, and add your network to the “Preferred Networks”list.
Click “OK” and then click “Apply” once more.
Now see if your connectivity issues are resolved. Later you can Trash the .plist files you dragged to the Desktop.
*Archive & Install*
As a last resort, an Archive & Install using your Mac OS X 10.5 (Leopard) installation DVD will usually resolve this issue. Then use Software Update to bring your system up to date. It appears that reapplying the recent updates in this condition, does not cause the problems to return.
Let us know if any of the above suggestions helped to resolve your connectivity issues.
Cheers!