Hello. I am hereby closing this bug. It has not been reproduced for three years, and its most plausible cause has disappeared.
If you consider that the issue is not fixed, please send an email to '758...@bugs.debian.org' starting with the following 4 lines. -- Package: taskcoach Followup-For: Bug #758794 Control: reopen -1 -- You may explain your reasons in the rest of the mail. Thanks for your contribution.