You got no problem with Link2SD ? When i install some apps (Titanium backup, GDrive, Dropbox...), they FC and i have to reboot the phone to stop those FC...
EDIT : I flashed Fugumod 2.4 alpha 19 in sdcard files, like you did, before use Link2SD
Samsung Galaxy 3 (GT-I5801)
Current ROM : CMX Jelly Bean by Marcellusbe
Settings : 100-800Mhz OnDemand
Sync on Google, Minus, Dropbox, Facebook, Twitter and others
Currently switch to Samsung Galaxy S3 ..