I've really strange problem with mining with cgminer on my desktop machine which I also using to browse internet etc
Every time i run cgminer (I realized that it's doesn't matter if I run it with any extra params or just url, user, pass) and trying to do something else on PC (related with writing on kb of course) after several hundreds of characters my keyboard hangs. It's constantly pressing last key I was pressing and the only way to fix that is disconnect it from USB...

I connecting kb back to USB, next several hundreds chars and story repeats.
I was trying to see if something happening in cgminer window in that very moment but seems it's totally random.
any thoughts?