Buen tuto, solo indicar que hay 2 tipos de apps2SD que no es nativo de Froyo, el A2SD y el A2SD+:
A2SD
This option adds an A2SD script to the startup process. Note that although applications are moved to SD, dalvik-cache remains in the data partition. To use A2SD, you should partition your SD card to have a FAT32 partition first, then an EXT3 partition second. Ext4 is NOT supported. If you include this option, do NOT include the A2SD+ option.
A2SD+
This option adds an A2SD script to the startup process. This version also moved dalvik-cache to SD. To use A2SD, you should partition your SD card to have a FAT32 partition first, then an EXT3 partition second. Ext4 is NOT supported. If you include this option, do NOT include the A2SD option.
Así que apps2sd también puede mover la dalvik-cache
