Corrupted Writer file OOo 2.3

My daughter has been writing stories on writer and saving them as .odt files.
However 2 of them have now become corrupted. They open after the dialogue for ASCII filter options with headers then a lot of hash signs where the data should be.
She (and I) both use Acer Aspire Ones with Linpus Linux.
Sha has not tried to save in any other format but the native open office.
Does anybody have any idea what has happened?
She is not aware of having done anything unusual but I cannot be certain of that.
Thanks to any respondents
Regards
Trekian
However 2 of them have now become corrupted. They open after the dialogue for ASCII filter options with headers then a lot of hash signs where the data should be.
She (and I) both use Acer Aspire Ones with Linpus Linux.
Sha has not tried to save in any other format but the native open office.
Does anybody have any idea what has happened?
She is not aware of having done anything unusual but I cannot be certain of that.
Thanks to any respondents
Regards
Trekian