Hi guys, I'm also seeing the same No-sim Icon, sim card with the red stripe through it. I enjoy hacking around with devices so i'm aware that there can be teething troubles with getting things to work just right so if i thought that this problem is purely software, i'm willing to just hold on and see if it gets fixed. But that means potentially 18 months of random no-sim icon, disconnections and ignored calls. Also, because i'm still within 7 days of purchase via mail, I think i can at least ask for an exchange for another N900. But should I go to that trouble, or just stick with it? Is this fixable with software? I'm not sure what step to take, the clock's ticking for me and any help is greatly appreciated!