I have around 120k images in my Aperture library, with no issues - but, its main home is on a Mac Pro with a dedicated hard drive. I use my MBP for mobile work and it is noticeably slower in every respect - so I can easily imagine your MBP choking on such a large library.
Thomahawk: Aperture does the same, just within a package file (you can just open up your Aperture library and see the folders), so no, what you suggest wouldn't change a thing.
Basically, Aperture is a resource hog. The bigger your library the harder your system has to work - I'm probably going to migrate to a RAID system in the near future to try and stop my hard disks thrashing quite so much.
Thomahawk: Aperture does the same, just within a package file (you can just open up your Aperture library and see the folders), so no, what you suggest wouldn't change a thing.
Basically, Aperture is a resource hog. The bigger your library the harder your system has to work - I'm probably going to migrate to a RAID system in the near future to try and stop my hard disks thrashing quite so much.