Tried that link, but not relevant to what I have happening here.
Also set the Machine Password Maximum Age to 999 using GPO
Since then it was quiet, but surely enough we've had another 10 fail today...
Surely I can't be the only experiencing this...
Maybe you should try looking through the ten other TechNet threads with the exact same title. They are to the right side of screen on the page I posted.
Hopefully one of those threads has some solutions for this problem.

My Computer
At a glance
Windows 7 Ult, Windows 8.1 Pro,Q9650-4.275GHz, E8600 4.5GHz, E6750-3.8GHzG.Skill PC2 9600 1200Mhz 5 5 5 15 2TGTX480
- Computer type
- PC/Desktop
- Computer Manufacturer/Model Number
- Home built
- OS
- Windows 7 Ult, Windows 8.1 Pro,
- CPU
- Q9650-4.275GHz, E8600 4.5GHz, E6750-3.8GHz
- Motherboard
- Evga 780i FTW
- Memory
- G.Skill PC2 9600 1200Mhz 5 5 5 15 2T
- Graphics Card(s)
- GTX480
- Sound Card
- Asus Xonar D2
- Monitor(s) Displays
- HannsG
- Screen Resolution
- 1680X1050
- Hard Drives
- GSkill Phoenix Pro 120GB SSD
- PSU
- ThermalTake Toughpower 1000Watt modular
- Case
- ThermalTake XaserV
- Cooling
- Xigmatek S1283
- Keyboard
- Logitech G15
- Mouse
- Logitech G9
- Internet Speed
- T1