Won't stop attacking when trying to move

This has happened several times to me and has cost me my HC characters each time it happens. I will be attacking a mob with my main attack spell by holding down the hotkey for the skell. Usually this is the right mouse button. I then use the left button to attempt to move out of melee range of the mob but instead of moving all I do is change my facing direction to where I was pointing but I am still attacking with my RMB spell. I am unable to stop the spell casting and die. The last time this happened was in the jungle.

I am running:

Windows 7 Home Premium 64bit
16Gb DDR3 RAM
AMD Phenom II X6 1090T @3.2Ghz
XFX HD 6950 2Gb with output to 3 monitors. Game monitor is 1920 X 1080.

All in game settings are maxed.
If it matters I normally use Firefox latest release for a browser.
I run a cat5 cable to the modem which offers 2mb download speeds for most things.

I run the game in windowed mode but full screen.

It has been reported before, I'm not sure if they have fixed it, but what were you doing at the time? Did you do any attacks or were you hit by any enemies as that began?

The last time it happened I had just gotten tot he jungle in act 2 normal. I was fighting the monkeys with ice nova and a yellow boss mob showed up so switched to my frost pulse which was mapped to the right mouse button. He was hitting me hard so tapped a health potion and wanted to move away but I just kept on attacking with frost pulse instead of moving. All that clicking with the left mouse button did was change the direction I faced when I was clicking where I wanted to move.

I've had the same problem. I was fightinga mob after they died I would just keep attacking. The worest part for my character is he drains hp each time he attacks. SO he would attack until he would kill himself. :(