Mine does this too.

It does it far more often when I plug it into the car charger and turn on bluetooth - then anytime within 10 minutes it will reboot.

I have also just installed Google Listen within the last hour and during the initial tutorial of this, the Streak locked up, then buttons flashed, then rebooted.

I love my Streak, but I see a lockup & reboot at least once per day.  And at least once in every 6 days I have to force a reboot by removing the battery as I cannot use any buttons to free it from a lockup.

Fixed...see link

Hello all, I was wondering why my Streak seemed to randomly shut off / re-boot all day today with a full charge....it seems that the battery / battery over have just enough play to re-start the unit when tapped / bumped / moved at times.

I tore a business card in half, placed it on top of the battery, under the cover, so everything is tighter.

Seems to have helped as tapping the back of the unit does not prompt a re-start now.

Dear Dell, we are waiting for a REAL fix ;) ASAP

Thanks,

Michael

found this

http://www.mydellmini.com/forum/dell-streak-support/22676-streak-randomly-switching-off-rebooting.html

i getting the sames issues

My streak is doing the same thing.  Purchased it through the US preorder.  I will leave it on my desk at work, look down and notice the buttons flashing, then it reboots.

Not cool at all.

found this http://www.mydellmini.com/forum/dell-streak-support/22676-streak-randomly-switching-off-rebooting.html i getting the sames issues