help :- lynksys BEFSR41 , site to site dies after every file

[pk24]

router lynksys BEFSR41 , when site to site transfering it dies after every file , elapsed counter keeps going but to get to next file i have to disconnect and reconnect , which is a pain

site to site works fine if i dont use my router and other progs to fxp , dont work with router as well

any hints on what to try next would be great

cheers