Why is my mouse doing that? Virus?

Hi

My mouse cursor on the screen will act up once in a while.
What it does, is that it just stops moving for 1 to 5 seconds then resumes and does that usually for only 1 minute twice a day.
I have a feeling something unwanted is working in the background and makes it do that.
The mouse is 2 months old, I have had no issues with it beside that. It has a fresh set of batteries in it.

Thanks for your help

Pat