Issue with command-let Get-ADDomainController

Hi Guys,

I wrote a script for PowerShell V2 in which I used commandlet:

Get-ADDomainController -Filter *

It ran perfectly for 2 Months and I was getting output as list of all the domain controllers in my environment. Now a days I am getting error on this commandlet as below:

PS D:\PROFILES\ashisht> Get-ADDomainController -Filter *
Get-ADDomainController : Directory object not found
At line:1 char:1
+ Get-ADDomainController -Filter *
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : ObjectNotFound: (:) [Get-ADDomainController], ADIdentityNotFoundException
    + FullyQualifiedErrorId : Directory object not found,Microsoft.ActiveDirectory.Management.Commands.GetADDomainCont
   roller

while if I run command Get-ADDomain it works fine. All other AD Commandlets are working except the Get-ADDomainController.

If I user >> Get-ADDomainController -Identity ServerName

It works fine. only -Filter * is giving issues.

Any suggestion or help is well come.