ACC2007: SubForm slows down form

Hello,

i have a form which is connected to a query with about 6000 records on sql
server. If i open that form, it is really fast. But If i add an empty subform
on this form, the form opens in 12 sec. What i've seen is, that without the
subform the record counter on the bottom only shows the current record but
with a subform on it, it seems that it loops through all records and the
shows "1 of 6000".

Any ideas why there is a difference? I also tried to make the subform
invisible or disable it, but the behaviour is the same.

Regards
Andi