Browse Host never has been a reliable tool. And it has also never been a certain method of telling if someone is sharing or not. I've had experiences of not being able to browse host one minute, then 5 mins later it did work. Or vice versa. I believe the browse host tool in LW 5 is slightly better than the one in LW 4. But even when you can browse host, sometimes it may not show their complete list of shared files. O.o