build thumbnails in advance, not on-the-fly during first page view

Hi

I recently upgraded G1 to G2. This went fine except that the thumbnails take a long time to load the first time you view a page. If I understand it correctly, this is an inherent 'feature' of G2 (thumnails get compiled on-the-fly)? However, I don't like that my visitors have to wait the first time so long.

Is it possible that all the thumbnails get build in advance? I assumed that running the Rebuild Thumbnails (Maintance) command would do this, but it doesn't. Also during importing the pictures from G1 I ticked the option "make thumbnails".

I know I can just click/visit an album my self, and the thumbnails will get created at that moment, but I have hundreds of albums so don't want to do this manually. Also tried a webcrawler without succes.

Any suggestions are much appreciated.

Gallery version = 2.2.4 core 1.2.0.6
PHP version = 5.2.5 apache2handler
Webserver = Apache/2.2.6 (Win32) PHP/5.2.5
Database = mysqli 5.0.45-community-nt, lock.system=database
Toolkits = Exif, LinkItemToolkit, Thumbnail, NetPBM, Gd, Ffmpeg
Acceleration = none, none
Operating system = Windows NT GALLERY 5.1 build 2600
Default theme = matrix
gettext = enabled
Locale = en_US
Browser = Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.11) Gecko/20071127 Firefox/2.0.0.11
Rows in GalleryAccessMap table = 58
Rows in GalleryAccessSubscriberMap table = 8710
Rows in GalleryUser table = 9
Rows in GalleryItem table = 8708
Rows in GalleryAlbumItem table = 274
Rows in GalleryCacheMap table = 0