[Harvey]

Hi,

I don't reccoment if you don't call admin/index.php every few seconds, but if you want to try at your own risk, query some SQL-commands:

create index joindate on user (joindate)
create index dateline on thread (dateline)
create index dateline on post (dateline)
create index lastactivity on user (lastactivity)

If you don't get what you want, you can undo with:

alter table user drop index joindate
alter table thread drop index dateline
alter table post drop index dateline
alter table user drop index lastactivity