Marionberry is a baaad code to be getting and, if you have followed all of the steps to check and correct your NAT type/ open all of your recommended ports([url=http://www.bungie.net/en/Help/Article/11930]here[/url]), you should contact your ISP to make sure that your router is performing optimally. If not, you may be eligible to obtain a new one from them or you might have to purchase a new one. You should also check to see if your router needs any updates. Routers have "web" addresses which usually look like 192.168.1.1, within this site, there should be a check for updates on your router. (Please note that it may not be this EXACT number, but likely something similar). This was Bungie's update on Marionberry after the big patch went live: [quote]Update on our investigations related to MARIONBERRY errors: [10/24] This error often shows up when the router the console is connected through has gotten into a fundamentally bad state. Router reboots often help, but faulty firmware or failing hardware can lead to repeated occurrences of this error. We are developing an update to gather more information about what types of network hardware tend to hit these issues most often so we can improve our help documents and possibly work with manufacturers to reduce the incidence of these failures. We don’t have an ETA for this update yet, but we’ll keep you posted.[/quote] Hope this helps. As a quick update, you should try a power cycle with all of your devices; turn off (and unplug) your xbox, router and modem, then plug them in the reverse order.