[chroniko]

better solution to check online users:

`
function bp_is_user_online($member_id=0){
if(!$member_id)
$member_id = bp_displayed_user_id();
$now = time();
$last_activity = bp_get_user_meta($member_id, ‘last_activity’, true);
$last_activity = strtotime($last_activity);
if( ($last_activity + 300) >= $now )
return true;
}
`
300 (in seconds) is default buddypress interval to check online users.

[chroniko]

I add some detail.
I’m using WP 3.3.1 and Buddypress 1.5.3.1
I tried deactivating all plugins and using standard Buddypress Theme. Nothing change: no screen notification for reply to activities.

[chroniko]

Same problem here. I temporarily solved by using remove_all_filters('upload_dir'); in my theme. I hope for a better solution in the next buddypress core update.