Just an update on this situation and a quick thank you.
I'd like to thank each and every one of you for your replies. I've learned a few new things here and it will serve me well If I, or anyone I know has similar problems in the future.
My final solution, though was to just take the gamble and buy a Netgear DGNG3700. It has been running since last Saturday solid, all computers connected and wireless signal is amazing in the kitchen now. Still a sudden jolt of interference if the microwave is turned on, but hey, can't do much about that except switching to 5ghz, but then i'd lose range
I guess my old DG834PN wasn't up to the job.