it can and in most cases will take atleast 3-5 min. before the installation of the Drivers is complete so just kick back and chillout......
however if you chose to create a bootable CD/DVD image (and you should have), then when you boot from this CD/DVD it will install the EXT. USB drivers with the quickness
less than 5 sec.....
Dont ask me why
just let me know if it holds true with you