Lost Wifi Connection

[artblue]

I was unable to connect to my ipod touch because I lost connection to the wireless connection, although I was getting a internet connection because my ethernet cable was attached from my computer to my router,my ipod kept asking for my password to connect but each time it failed.I contacted my broadband supplier and was told to reboot my router and this worked my router is just a couple of months old but wonder if this could be a ongoing probem it as been fine so far.