So I hate to bring this issue up again, but I'm having the same problem with my apps not ending up on my SD card. I made a 2ish GB partition (in recovery), downloaded a couple of apps (astro file manager, swiftkey), and when I checked in settings I found that the apps were on the internal memory. I wiped everything, reflashed the quattrimus rom, and tried again with the same result. The data/ directory is empty, but the sd-ext/ directory is empty as well.
I'm new around here and have just been reading threads to build up a small amount of knowledge. I don't know if any of this will help but some things I noticed:
When making the partition, I was only able to specify partition size (2048? M) and the swap size (0 M). I wasn't able to specify the partition type (ext3/ext4 etc).
In Astro File Manager, the sd-ext folder isn't in the sd card directory, it's just on the phone.
When I used the regular functionality to move apps to the sd card (for the apps that allow this), only a fraction of the app is moved (e.g. 1.7 MB of Titanium Backup shows up on internal memory, and 7.1 MB show up on the sd card in settings).
Any insight would be greatly appreciated.
EDIT
Also, I took a look at the SD card using disk utility and the partition is unmounted and I don't seem to be able to mount it. Could that be the issue?