On the third day of disrupted BlackBerry service, users of the device took to social networking sites like Facebook and Twitter to vent their anger and criticize Research in Motion.

The users' comments mainly target the company's failure to tell them about the problem they were facing, and the cause.

Since the start of the malfunction on Monday, RIM has released only three official statements. Out of the three, the company mentioned the cause of the delay in the last message released on Tuesday.

In the release RIM said: The messaging and browsing delays being experienced by BlackBerry users in Europe, the Middle East, Africa, India, Brazil, Chile and Argentina were caused by a core switch failure within RIM's infrastructure. Although the system is designed to failover to a back-up switch, the failover did not function as previously tested. As a result, a large backlog of data was generated, and we are now working to clear that backlog and restore normal service as quickly as possible. We apologize for any inconvenience, and we will continue to keep you informed.''

As soon as the statement was posted on BlackBerry's official Facebook page, BlackBerry users flooded the post with angry and sarcastic comments.

A user with profile name Chantel Erfort Manuel said, RIM's lack of communication has been the biggest disappointment throughout the blackout. Also problematic was the fact that messages appear to have been sent, but aren't really.

I also believe they have sent everyone a heartfelt apology through the BBM service.... so we should get it when they start working again...., another user Duncan Campbell said.