It's a UI issue, the same problem plagued the n800/n810's default media player. You have to experiment or look/ask here to find it (I think I remember myself doing that when I first got the n800 too in Dec 2007).. wow it's been two years.

Don't know why the TC is experiencing browser issues, I haven't seen anything like that even in the multi-tasking videos. As for lack of applications and widgets, have you enabled extras? As of now extras is disabled until the 1.1 firmware update. As more time comes by we'll see more applications from extras and as soon as something like EasyDebian for Fremantle is ready you'll be able to use Debian and some of its applications.