Sound stutters for a second when installing/uninstalling a program

I am having a strange issue with my 2 laptops and 1 dekstop. Whenever I'm listening a song and at the same time I`m installing/uninstalling a program, I have a sound stutters for a second. Every system is with the latest drivers and the mashines are fairly new.

Any ideas?

The only thing which is the same between the mashines is the operation system, which is Windows 7 Home Premium 64bit.

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