I replaced my fuel filter today. This is the first time I've done it myself, last year the dealer replaced it as per the "free fuel filter replacment" letter.

I was suprised that there was a lot of rust looking crud in the cavities in the head of the WIF. I got some brake clean and sprayed out all the crud from the WIF and then reinstalled in my new filter.

Is this normal? Should I worry?

Moved to maintnence.

I hope you're changing the filter sooner than once a year....I wouldnt worry about it. You got a new filter on there now.