I have kernel*.32 and I use ext4 on my drive. Now I just don't know how to check if trim support is enabled?
When calling 'mount' on the CLI you should get a response that looks similar to:
/dev/sdx on / type ext4 (rw,noatime,discard,errors=remount-ro,commit=0)
Note the discard option is present, which signifies the volume is mounted with the TRIM option.