STYLETHREAD -- LET'S TALK SHOP!

Girls, I don't think I need advice, I just need to vent rant and get this thing out of my system (if you have any advice, tho, go ahead, I could use anything).

This morning, like 30 mins after I got to work, the secretary informed me that a colleague, let's call her Joan, got her 2 weeks notice from our boss (who is away for work). She knew b/c he cc the e-mail to her.

I got so scared, you can't magine (I actually had to sit down). First of all, I feel bad for her, but she was switching job this summer anyway. But then, I am so worried I could be next!

I haven't had any results for a while, b/c my equipment has been down for months, and I was trying to make it work (together with another colleague); so I started to get new data about 2 moths ago. My problem is that I usually feel like my boss is so busy and I should leave him alone, but at this point I think I should continuously inform him of my problems or progress, so that he doesn't think I am doing nothing.

ppl from work keep saying that I shouldn't worry, that I am always there while Joan would come in late leave early and not be there every day. But my biggest concern is that my visa is valid as ling as I hold the job!

Besides, I love the job, I love the environment,  I like my boss and I still have a lot to learn from him. If he had the same opinion of me that I have of him, I'd be set for my whole life!

Sorry for the length of this (pointless?) post, but I am still nervous.

Ant thoughts/suggestions? Ever been is a similar situation? tia