Blocking messages from a particular contact Possible Duplicate:
  Good app for blocking incoming sms?  




how can i temporarily block all messages in an ANDROID operated Dell Streak by a particular contact....
I don't think you can with the default SMS app.

The 2 best alternatives, HandCent SMS &amp; GoSMS offer a feature called blacklisting - you can long-press hold a conversation and choose to add it to your blacklist. Such messages will be hidden (not deleted) and you won't receive notifications / popups.

You can also configure individual notification colour and ringtone for a particular user.