Broke powershell, "The number of WaitHandles must be less than or equal to 64"

Get-VMHost : 4/23/2013 9:41:20 PM    Get-VMHost        The number of WaitHandles must be less than or equal to 64.   
Line:226 char:27
+     $thisHost = Get-VMHost <<<<  -Name $computername
    + CategoryInfo          : NotSpecified: (:) [Get-VMHost], VimException
    + FullyQualifiedErrorId : Core_BaseCmdlet_UnknownError,VMware.VimAutomation.ViCore.Cmdlets.Commands.GetVMHost

Never happened running this script before, we got through a few thousand objects and this only happened when querying through the host-base.

Any idea what causes this and how to fix it?