DroidX data encryption - which algorithm and how strong?
Apparently, DroidX uses ecryptfs

Following are mount options on /data/data:

rw,nosuid,nodev,noatime,nodiratime,ecryptfs_sig=****************,
    ecryptfs_cipher=aes,ecryptfs_key_bytes=32,ecryptfs_passthrough


I would imagine this means that encryption key here is 32 bytes, which is 256 bits, which seems pretty good to me.