Prior to launching BBM for Android, an
unreleased version of the BBM for Android app
was posted online. The interest and enthusiasm
we have seen already – more than 1.1 million
active users in the first 8 hours without even
launching the official Android app – is
incredible. Consequently, this unreleased version
caused issues, which we have attempted to
address throughout the day.

Our teams continue to work around the clock to
bring BBM to Android and iPhone, but only when
it’s ready and we know it will live up to your
expectations of BBM. We are pausing the global
roll-out of BBM for Android and iPhone.

Customers who have already downloaded BBM for
iPhone will be able to continue to use BBM. The
unreleased Android app will be disabled, and
customers who downloaded it should visit
www.BBM.com to register for updates on official
BBM for Android availability.

As soon as we are able, we will begin a staggered
country roll-out of BBM for Android and
continue the roll-out of BBM for iPhone. Please
follow @BBM on Twitter for the latest updates
and go to www.BBM.com to sign-up for updates
about BBM for Android and iPhone. These issues
have not impacted BBM service for BlackBerry.

Source..... The Official BlackBerry Blog