Network services failures
 

hi
i ve got a problem
the network features. i cannot access google talk. i ve got often problems with emails being fetched (unable to connect, may not exidt etc). I've reinstalled modest several times and it pisses me off. Now I've Smtp authentication failed
Is it possible to fix it once and for all in any way but reflashing?
thanks in advance
PS. I've got internal errors from time to time. Is it fixable?