Hi Alex,
checked with server team, from their side its no change.
Further we have been using only joomla 2.5.9 only since last 4 months, haven't changed the version, so i understand there is no scope for change that side also.
Further after your response yesterday, to just check if its particular bug within joomla, i downgraded the joomla version to 2.5.8 and then 2.5.7 and now its running 2.5.11. however during for all these 4 versions of joomla, i did not notice any change in behaviour for facebook likes, they remained the same way, dispalying different number on blog view and different number on article view.
In response to your another query regarding "featured articles", we do not use "featured articles" for joomla, for us in our website "feature" is just one of the joomla category.
Now i got some very interesting observation.attaching two snapshots, in one of which url has the category name, and in the other one it doesnt have...
didnt notice any difference in the number of likes on both url...
and the most surprising thing is that we also have facebook comments, comments remain the same(Fb comments working fine).
but in the settings of the FB comments the debugger url, contains category id in both cases..
My feeling is that this is some sort of facebook bug, might be introduced coz of recent changes in facebook..
Please help!!!!