I understand this directory has something to do with Bluetooth.
There are ten ~6.7 MB files in that directory with names like core.872 and core.19735.
I did a nandroid backup and then removed them. Everything seems to be OK, but I don't use BT for anything.
Any idea what these are? Could this be related to the BT ROM leak?
I wish people wouldn't call it a "ROM leak"... it just sounds so silly. ROMs don't leak and the ROM in the Hero isn't leaking. *SOMETHING* is just occupying data space.
Having said that... those are core dumps. Weird, I'd have expected Android to disable core dumps. The phone doesn't have file(1), so it's a little difficult to tell what dumped, but the number in the extension is the PID of the faulting process.
Mine doesn't have any, or I'd yank one over to my desktop and investigate it.
They *are* taking up space in /data, which is going to make the phone look like it has less storage space available (the number in the Settings app will go down). Erase them, they're useless to you.
It might be interesting to search the whole phone with find(1)... that at least is there (or maybe it's in the busybox MoDaCo installs ^_^) and see if there are any other dump files hanging around.