While I haven't had any serious issues(like the OP had), I have noticed that Transmission does tend to freak out more than any other torrent program I've used.
Case in point when dealing with large files: Transmission will REALLY eat up ram and go unresponsive at times.
I'm thinking I might go back to Vuze for a bit, but I really like the look of Transmission.
And yes, as others have stated, Transmission does tend to access the HDD more than any other torrent program. I'm beginning to think it MIGHT be what's causing my HDD to make clicking(almost like waking from sleep*tick tick* sounds) every once in awhile.
You want to switch to Vuze becuase Transmission runs too slow? That's like switching to Windows because you got tired of the security holes in Mac OS X.
You are both correct, that it what I was trying to say, they can't get random files only one's you allow.
It was the "by default" bit that made it sound like Transmission could be made to share your entire hard drive if you changed the wrong setting.
There's probably a good reason why people use Transmission over XTorrent, but I've found XTorrent to be awesome.
XTorrent is a leeching client. It isn't designed to make and share new content.