Find whatever plugin you are using that is generating them (almost certainly either the guifications or libnotify plugins) and either configure them to stop generating those specific notification or unload the plugins entirely if you don't want the notifications at all.
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hi,
where to configure pidgin to stop all those notifications we get when user comes online?
-deostroll
Find whatever plugin you are using that is generating them (almost certainly either the guifications or libnotify plugins) and either configure them to stop generating those specific notification or unload the plugins entirely if you don't want the notifications at all.
In my case, it was the libnotify plugin.