Don't worry, it's a safety measure implemented by Google;
http://xdaforums.com/showthread.php?t=1362200
That's weird actually, I figured all the WiFi issues were fixed by Kwiboo's patch. Have you tried applying that? Are you sure you did the full monty wipe (system, boot, data)?
Paparesee, I'm sure your application issues will be addressed to by their developers wen ICS gets more common (CalWidget, Launcher Pro).
I'm a bit disappointed by the standard ICS lockscreen. I was hoping more customization options and notifications on-screen (I'm anti-iOS but I like this particular feature) and I also miss my swipe to vibrate
I don't think the App drawer will be customizable, I don't think it was on stock GB either? Will have to wait for some new Launcher implementations to pop up.
The thing I miss the most in ICS are the extra options on the power off dialog. I know it was only implemented by Cyanogenmod, but it was so goddamn handy to directly boot into recovery or do a restart. I'm confident it'll come back soon though
Greetz