Yesterday we were treated to a 10 second warning that the server was coming down due to an "invalid string", on reboot we then retroactively got the 5-minute warning we should have had....mildly annoying. Today the Server is just an unplayable lagfest, tanks cartwheeling through the ground, troops bouncing without bounce pads and crashing graphical tears mixed with significant downtime. I have a very high-end gaming rig has no issues on any other game and I've kept my drivers current. This Server is basically in need of either a rebuild from the ground-up or the ability to transfer characters to one of the newer, low-pop servers.
Intruder, I assure you, we are very much aware of this and are currently working hard to fix it. Please refer to this post so we can condense similar posts to one: http://forums.station.sony.com/ps2/index.php?threads/miller-crash-11-25-2012.53003/