After a disappointing Android 3 experience on my Samsung Galaxy Tab 7 Plus, I have longed for an ICS update. I noticed that this is released and users of many other regions have reported getting it. I just failed to see why it did not hit my device. So decided to force update. Below link provides the complete instructions that I used to update my device.
The interface looks much smoother. Hopefully, the erratic reboots are gone.
One finding, things did not work fine when I used a windows virtual machine on my Linux box to get this through. VM always used to reboot at the point when the flash is being loaded. Tried this from a windows laptop and it worked as expected. Cheers.