We have gathered some stats site-wide about what clients do you use.
So far, there are a lot of users that use banned/unapproved clients.

This is the list of banned clients:

ABC 3.0.1, 3.1.0
Ares
Azureus <= LOWER version than 2.5 !
BitBuddy
BitComet
BitLord
BTSlave
BTuga/Revolution
Burst!
eXeem
Limewire/Frostwire
MLdonkey
Rufus
Shareaza
TorrentStorm
TurboBT
uTorrent <= LOWER version than 2.0, ESPECIALLY 1.8 !
uTorrent 3.3
BitTorrent 7.8
XBT


We recommend that you use utorrent 2.2.1(or new stable version, but not 3.3), Transmission(or new stable version) or Deluge 1,3x(or new stable version)

Also, clients in alpha or beta version are used at your own risk, aswell as using banned clients.
We hope it will not be the case and we wish you HAPPY FAPPING!

Forum discussion here --- => forums.php?action=viewthread&threadid=2847
2 days, 2 hours ago
Avoid using uTorrent 3.3!

Well this is an advice not that we are going to forbid you to use it or anything. Is up to you but....

uTorrent 3.3 has severe problems and is possibly hurting your ability to seed and your ratio. We recommend using an alternative version or client.

Same for the equivalent version (7.8) of BitTorrent.

So our advice is if you are using the above versions to downgrade to the previous versions, they work fine.

And it does not look like these problems are going to be fixed in 3.3. MAYBE in 3.3.1 but the jury is still out on that so also do not try the beta version for now.

You can roll back one version from the latest version in the linked thread and still use 3.x utorrent as well.

Forum thread here: forums.php?action=viewthread&threadid=2837

Thanks and we are just trying to help you and avoid you problems.

Alternatives include Vuze, Deluge or an older version of uTorrent.