Problem

When you do "further segmentation" on import a tmx into a T5Memory language-resource, this will produce a temporay tmx file in folder:
/data/TmxImportPreprocessing

This file is not deleted after import is finished.

Sample, see screenshot:

Solution

Delete the file after import.
Maybe an additional garbage-cleaner will be a good idea. It should delete all old (old = older than 10 days) *.tmx files in the above mentioned folder. Can be triggered by a nightly cron or so.