I bought an imported HTC Desire about 6 months ago and put my New Zealand Vodafone SIM in it. When I start up the phone, there's nothing in the noticication bar as you'd expect. Then, after a call is made or data connection initiates, an icon appears that looks like a SIM card with a cog next to it. I assume it's something to do with SIM settings. When I drag the notification bar down and click on it, nothing happens.
It's not a big deal, but I'd like to get rid of it if I can!
Don't know if it matters, but since I upgraded to Gingerbread, most of the icons in the notification bar are grey rather than white, but this one has remained white.
The phone is running the official HTC Desire Gingerbread upgrade - Android 2.3.3.
Update: Photos of the icon: