I have a test WP install on my desktop machine (Linux Mint). Everything works fine and I can, and have, installed any number of themes from the Dashboard.
However, I've just installed WP on my laptop (Ubuntu 11.10) and when I try to install a theme from the Dashboard, WP asks for FTP details.
Does anyone have any idea why this should be, or some idea as to what I ought to take a look at? I confess to not being the best admin in the world, to say the least.