[ Before: Filenames truncated to 17 characters. After: Full filename displayed. ]
Nautilus, the default file manager in Ubuntu, offers 3 kinds of views: icon, list and compact. The compact view in Nautilus is similar to the list view in Windows Explorer and this is my preferred way of viewing files. However, the compact view displays only the first 17 characters of the filename. I find this quite irritating since I tend to use longer filenames.
To remove this restriction on the displayed icon text width, open gconf-editor, navigate to /apps/nautilus/compact_view and uncheck the option all_columns_have_same_width.
Tried with: Nautilus 2.30.1 and Ubuntu 10.04 (Lucid Lynx)