ok i have a problem with my wii now

.................... i have been playing on my wii and have had a blast on WAW (had my previous issue solved). however now i have been recently having the game freeze right at the loading of connecting to the multiplayer screen...ive tried without gecko loader by just loading from the disc but still freezes the wii. I have even tried connecting on MWR and that also freezes. Every other game like Mario kart, MW3, and black ops work flawlessly, but this issue puzzles me?? i am wondering if it is from the usuage of codes on both games or the recent install requirements for wii flow?? any idea/suggestions??

ive had this happened once before but didnt play until the next morning and i have been playing for multiple hours throughout the day...i was wondering if long activity or issues with connectivity have an affect on it as well