Some minutes after I had opened some lecture notes in a PDF file (10MB/2300 pages) in Adobe Reader 8.1.1 for Linux GNOME notified me that 100% of my home partition are consumed.

Eh?

Baobab then revealed that ~/.adobe/Acrobat/8.0/Temp took more than 10GB in my home directory! I subsequently deleted all files in that directory and, strangely enough, after I had deleted these and restarted Adobe Reader I had to reaccept the licence and the complete history of opened files has gone.

Dear Adobe,

• under Linux there is a directory named /tmp which is precisely conceived for the storage of temporary files,
• and the usual approach to store user-based info is in a text file in ~/.{appname} or similar.