AdMob as shows in Landscape but not in Portrait

This was really weird. I added AdMob Ad to an Android application, and it didn't show. I tried rotating to landscape & the ad appeared.

Solution: I found the solution here - the AdMob ad must not be padded, or be in a padded container.

Android application installation stuck on "Downloading"/"Installation"

Problem: Application installation hangs/stuck on "downloading" or "installing" from the Market. Reboot does not help.

Solution: Clearing the Android Market application cache -
* Menu => Settings => Applications => Manage Applications => "All" tab => Market
* Click on "Clear cache" (you might get 'Force Close' on the Market application after that).
* Reopen the market & download

Note: This is an issue with the Android Market application not the application you're downloading.