Bulk delete Subscribers

Hi,

we import regularly an updated list of subscribers (more than 1700) saved as CSV from our intranet database. To avoid duplicated, we delete first all subscribers and import every time the complete list again.

The problem is that when we go to the Manage Subscribers page, only 15 subscribers a time are displayed, making the bulk delete a pain. If we press the "Show All" link we get a blank page.

Any suggestion is welcome.

Thanks

Best