How to stop Outlook from expanding PST folders....

[Mrpush]

Hi,

Using outlook 2003 with 2 PST files. I have filters set up to move mail
into other folders.

In folders view, the PST that gets new mail expands automatically everytime
it receives new e-mails and shows the entire folder tree. I don't want it to
expand.

Can I stop this behavior somehow?

Thanks much,

Mark