I got this problem too. the fix is very simple.
When it gets stuck at 6 hosts it should (after a while)
give you a network connection error and ask if you want
to change your network settings. The reason it does this
is that you have a bunch of files all searching or trying to connect
and it is bogging down your bandwidth.

Go to the transfers screen.
Pause all your downloads.
wait untill the text on the bottom of Xolox says network ok.
then you can unpause all your downloads.

To garuntee a network connection every time.
Its easyest to pause all of them just before you exit Xolox