Generally speaking you will get better performance from a wired connection over wireless, but this is more related to throughput than stability. However, if you aren't getting a good local WLAN signal then definitely toss a cable from your router to your PS3 and see if it fixes the problem. There is a good chance your issue may be with your router / modem's Intrusion Prevention (IPS) settings. I have to turn most of mine off when using Burnout Paradise, or the modem continually resets the ADSL interface trying to stop the traffic from the PS3 that it thinks is an intrusion attempt. My suspision is that some games attempt P2P style connections between gamers which is why you sometimes need to open incoming ports. Try looking in the "FIREWALL" settings of your router for IPS / IDS configuration and temporarily disable whatever is on. See how it goes for a while and see if it is stable. If it isn't, then put them all back on. Otherwise, try turning diferent options on 1 by 1 and see which one is causing the kicks. Alternatively, you may just have high latency to the server due to its location and there is not much you can do about that... unless you are planning on on becoming a Septic Tank!! Cheers.