问记忆被吞噬的问题

EN

    $containers = @(Get-Item -Path $Path | ? {$_.psIscontainer})
    $containers += Get-ChildItem -Path $Path -Recurse | ? {$_.psIscontainer}

    if ($containers -eq $null) {break}
    while ($containers) {
        $container,$containers = $containers
        Write-Output "Container: " $container
        $accts=$null
        $accts=@()
        $accts = @((Get-ACL $container.fullname).Access)
        while ($accts) {
            $acct,$accts = $accts
            $acctsQADObject = $null
            $acctsQADObject = Get-QADObject -PageSize 1000 -DontUseDefaultIncludedProperties -SizeLimit 0 -Identity ([string]$acct.IdentityReference) 
            if ($acctsQADObject.ObjectClass -contains 'group') {
                $Name = $acctsQADObject.Name
                $DN = $acctsQADObject.DN
                $key = "$($Name)|$($DN)"
                if (!$groups.ContainsKey($key) -and $key -notcontains "Group|Member") {
                    Write-Output "Found first reference to a group: $($DN) assigned to directory $container"
                    $msg += "Found first reference to a group: $($DN) assigned to directory $container `n"
                    $groups.add($key,$DN)
                }
            }                           

        }
    }