Router stops needing to be reset after changing protection type?

okay this may end up being more of an answert than a question, but i have a Linksys BEFW11S4 V4 router and i used to use WPA-PSK protection, and the dumb router would go "out" about every hour. anything connected to it would revert to some stupid local IP that wasnt on my default gateway like "224.83.142.5" and i'd need to reset the router. but i recently got a palm TX, and if i try to connect to the network on it, it kicks everyone else off. so i recently changed to WEP encryption (i know its stupid to use WEP, but im also MAC filtering and there arent any black hats around and its WEP or nothing) so im using WEP keys. the thing is, since i changed, the router hasnt gone out once. so, this might be a solution to my reset problem? has anyone else who has this problem with linksys routers (and i know a lot of their routers have shitty chipsets, so i wouldnt doubt it) tried switching to WEP? i dont know why it happens, but its been great being able to run a server without it resetting constantly