I want to give some more background. I had this problem in early January 2008 and it got resolved after I Reset the router, did the System Restore and then started using a different USB port for MJ.
However, this stupid error has started coming again and I will list a few things that I have already tried but no success yet

My Setup first
Windows Vista O/S Home Premium, using a http://www.utstar.com/Document_Library/0046.pdf (UT-300RTU) HIGH SPEED ADSL 2/2+ ROUTER /BRIDGE CPE Router (have never tinkered with the default settings and it was working on the same router just a week back). I did disable the Windows firewall but still have Norton AV 2008 for Vista as on and it has a firewall, which was again always there (last time when I had the problem I removed Norton and it still didn’t work so I doubt that this is the Firewall issue).
Now all that I have tried and no success yet
1) I Reset the router, did the System Restore and then started using a different USB port for MJ. I have now exhausted all the ports on my laptop.
2) I tried running the magicfix, however it fails at the very last step "Checking the magicJack's configuration ..." and I get the error "Unable to access your magicJack. Please reinsert the magicJack and contact tech support if the problem continues." My MJ is plugged in when I get this error though.
3) I also tried http://digital-nomads.blogspot.com/2008 ... tware.html suggestions.
Version Number One
Unplug the MagicJack USB Dongle. Go to "Start" in Windows and click on "run" and type (enter) regedit and press Enter.
Now Click on + Sign next to HKEY_LOCAL MACHINE.
Click on + Sign next to SYSTEM.
Click on + Sign next to CurrentControlSet.
Click on + Sign next to Enum.
Locate the folder called USB. Right Click on the Folder and Click on "Permissions".
In permissions Click on the Check Mark called "Allow" to the right of "Full Control".
Click OK.
Next Click on + Sign next to USB and locate two folders called "Vid1307".
Right Click on one at a time and select Delete.
Next Click on - Sign next to USB.
Right Click on the folder named USBSTOR and Allow permissions.
Next Click on + Sign next to USBSTOR.
Locate the folders named "CdRom&Ven_YMAX&Prod_MagicJack&Rev" and "Disk&Ven_YMAX&Prod_MagicJack&Rev"
Right Click on these Folders one at a time and hit Delete.
Version Number Two
Double Click on your Hard Drive (usually called C:\).
Double Click on Documents and Settings.
Double Click on the Folder that has the Username you use when logging into Windows.
Double Click on Application Data.
Double Click on Folder labeled "mjusbsp".
Double Click on Folder labeled "in00000".
Find the Setup File there and Delete.
Version Number Three
Use Device Manager to Uninstall the MagicJack cdrom/disk drive/usb hub.
Unplug the MagicJack device.
Delete the mjusbsp Directory and all Subdirectories (probably at c:\documents and settings\(your user profile name)\application data\mjusbsp).
Use regedit to locate the HKEY Current User Talk4Free entries and Delete the Talk4Free Key and all Subkeys.
Delete the MagicJack Directory and all Subdirectores (probably at c:\documents and settings\(your user profile name)\local settings\application data\magicjack).
Delete any start menu and desktop Icons.
Reboot.
However, I was not successful in doing Version Number One although my user is listed the Administrator of the laptop that I run at my parents home. I wasn't able to give Full Control Permission to the USB and USBSTOR folders and hence was unable to delete the folders. I am on a computer running Vista OS.
I would greatly appreciate help from the community to get my MJ back to life. Thanks for reading this long post but I wanted to start by giving as much information as possible,
Thanks much.
NC