I've run across a strange scenario. Whenever I connect to my shared hosting website with a ftp client, the site will experience error 500 for images and subsequently not show the images. Disconnecting the ftp client immediately fixes the issue. So my question is, what is causing this, and how can I fix it? Below is some information which may be relevant. Thank you.
1and1 Hosting
PyroCMS framework
php allocated memory: 120M