This is my very first post on the forum, although I've been reading a lot here =)

My problem is that after I login into Ubuntu, I hear a weird noise for 5 seconds, then it stops.
The noise is the same noise that you hear when you're watching a television with the typical "snow" screen. ( like this picture: http://www.uniteddivas.com/sara/mysp...now_lg_clr.gif )

My audio equipment is the Logitech X-230

Does someone has a solution for this irritating thing?

Thank you ^^