Screen freeze when connecting Galaxy2 phone

[rg12]

I finally found the cause of my problem.

When i connect my cellphone through USB to my computer all my
monitors start to blink and the displaylink monitor freezes and everything
goes crazy.

When i disconnect the phone everything goes back to normal.

It happens only with the cellphone, not other USB devices does that to the
monitors...I tried different USB jacks for the displaylink monitor and also
for the cellphone...nothing.

I have to have my phone connected to my computer as it is an important
part at my work station.

Would appreciate some help here...

Thanks alot,
Roy.