Issues with level3 in Seattle

Hey gang, just curious if anyone else has been having any issues with level3 (as3356) here in Seattle? 4 times today traffic transiting them has been blackholed for 1-2 minutes, and then recovers. No route withdrawals, etc.. just blackholing for a few minutes. Has happened 4 times now today, a few hours apart each time. I'd like to hear if anyone else has been having issues today before I call their noc... Thanks kindly, Christopher Rogers Network Engineer - real networks