The file permissions are all read and write for "albert". I can only assume that you are logged in as "albert", otherwise you should switch to the proper user. I also assume that you do not open that file from a read-only backup CD (you said it has write permissions).
Did you re-install OpenOffice, or are you using a different version of it? Maybe you had some module loaded in your previous OpenOffice installation, that is needed by parts of the spreadheet (we don't know anything about the contents of your document or your earlier system).
Even so, if it can be opened in read-only mode, then the data sheets can also be copied. Just create a new document, select all cells from each sheet (one after the other) and copy them into the new file. By saving the new file you should have an editable file. If the new file is still read-only, then you have a system that is infiltrated by aliens from outer space and invasion has obviously started already.
Last edited by Tinkster; 10-30-2010 at 04:15 PM.