[Owncloud] Icons not displayed on the Web Interface

[Josep Cols]

Hello:

On a new install od Owncloud V2 over   PHP 5.2.17, on the Web interface, 
the icons are not displayed.
1) The icons on the left hand menu are never displayed.
2) When I upload a file ussing the Web Interface, just after upload, the 
icon appears on the left ofthe file (I've tested jpeg amd mp3 files and 
a litle image and a 'muic symbol' apperas as icon.
   After navigation, when I return to the files panel, no icon's file is 
dislayed (only when I clik on a file, the square symbol to 
click-to-select appears)

Any idea?

Thanks in advance