Bad sign of a corrupt file system?

Hi,

This file is showing in my desktop:

yfrog.com/ob1jzap

If I check on the terminal it doesn't show:

Desktop » ls -la                                                                                                                                                         ~/Desktop  
total 256
drwxr-xr-x@ 3 joaquin staff 102 24 Mar 2011 $RECYCLE.BIN
drwxr-xr-x+ 9 joaquin staff 306 4 Apr 21:29 .
drwxr-xr-x+ 65 joaquin staff 2210 4 Apr 21:29 ..
-rw-r--r--@ 1 joaquin staff 15364 4 Apr 21:29 .DS_Store
-rw-r--r-- 1 joaquin staff 0 18 Oct 2008 .localized
drwx------@ 5 joaquin staff 170 14 Mar 21:42 BOOKS
-rw-r--r--@ 1 joaquin staff 111786 4 Apr 21:28 Screen Shot 2012-04-04 at 9.28.11 PM.png
drwxr-xr-x 17 joaquin staff 578 1 Mar 19:14 desk
drwxr-xr-x 15 joaquin staff 510 4 Apr 21:29 desk1

So, is my disk/file system is dying?