i think many people suffer of this also
btw, BitComet and µTorrent aledi ok now

if you try other bt client, then it will become worst

so, it mean that you do not have any other bt client??
for me, i think now we must have another backup bt client

i use Tuotu as my alternative
try µTorrent before, but seen like the task cant be continue
and i also dunno why it cant be continue...
Tuotu didnt have this problem

you dunno chinese?? =.=
then try Azereus la
or google for more