I was reading a post from back in July this year about frequent game disconnects, and there is quite an extensive blue-post reply to the problem that never actually solved it.
People were getting disconnected because of certain skills they were using (Mainly AoE and speed killing) and Blizzards normal response was to 'update your drivers'
Ok, you have been using the 'update your drivers' excuse for long enough, and it's getting tiring.
Most people either have a driver updating assistance program, or know what they are doing. Please don't treat us like idiots, it's not the early 2000's
After extensive research, I have discovered that your servers have a packet issue when too many things are happening in the game. Regardless of internet speed, your end just can't keep up, and decides to just disconnect the gamer.
THAT'S why people in town or at a vendor never get disconnected, because there is nothing going on. Most people's machine specs are way over what you require, and almost ALL graphic card drivers update themselves now a days.
Windows 7 keeps on top of all the other system drivers, It's not XP anymore, can we please wake up.
In the thread I read from July, the people with problems were having trouble with skills like electrocute and blizzard. I have a monk, and every-time I disconnect it is during an intense battle, and generally when a large bolt of chain lightning leaves my fists, I DC, lose my NV buffs and throw my coffee mug at a spot on the wall.
I have submitted several tickets all to no avail, you have my DX diag and msinfo files, please put a bit more investigation into the issue. You obviously changed something in the patch that is causing your packet loss to 'quit' the game. This is evident in that XP leveling on MP0 has more disconnects than slow killing in MP8. Barely ever get disconnected in MP8. (if at all)
Bit of bug reporting I was fighting a mortar mob in the keep depths lvl 3 and an error came up in the game. I couldn't see the mobs, only my follower could kill them, and where the mob should have been, there was some bold magenta text saying 'BAD DATA )'
So I tried to hit that instead to no avail..lol