abandoned work units won't go away

Aborting a Task of Einstein@Home usually doesn't free much diskspace (if any at all). The largest datafile is downloaded with the first Task for this file and stays on the disk as long as you get work for it. The scheduler should take care of giving you Tasks for that file as long as there are some available to actually avoid downloading a new file with every new Task.

If the scheduler tells you that he's not sending work because of disk space issues, aborting tasks doesn't help. Either free more disk space or adjust the your disk space settings in the general preferences (see "Your Account" on the front page).

BM