Using anydbm (which is using dumbdbm) on RH 7.0 box
(kept up to date with redcarpet) and Python 2.1.1.

Wrote a script to convert a bugs from one BTS to Roundup.
The script opens the db once, loops through all the
bugs, with a db.commit() after each bug. After 2,000 or
so bugs, I ran out of disk space. None of the bugs (or
users, or keywords) added show up.