I followed your suggestion:
What you need is something a little more elaborated, in this case:
[slimstat f=’count-all’ w=’*’ lf=’WHERE:UNIX_TIMESTAMP( CONVERT_TZ( NOW( ) , ‘+00:00’, ‘-05:00′ ) ) – dt < 300’]
Where -05:00 is your current timezone (UTC+??)
I live in a GMT+1 zone.
The result: 187 (i got almost no visitors and 2 registered users)
I wonder: the * as w parameter, select all column’s doesn’t it? I substituted the * parameter with ‘user’, result 2 (also wrong, only one user logged in), i substitutes the * also with ‘ip’ (all visitors and members in my opinion) result: 4 (should be 1).