help !! corrupt file system

[Frank Ramsay]

my /usr/bin filesystem has been corrupted !!!

As near as I can tell it happened earlier today.  I had just logged off and 
when the kde login screen started to come up the system froze then rebooted.  
It went through the normal system check but when it came back up it used the 
gnome login screen instead, I also noticed a few other things like kmail 
would no longer launch URL's.  So I did some digging and found a bunch of 
corrupt files in /usr/bin.
 
Here are a few things I see, when I do 'ls -l' in the /usr/bin directory I 
always get this before the file list:
ls: drkonqi: Input/output error
ls: kcmshell: Input/output error

Now my question is this, do I have any options other than re-installing?
I tried (I know it was stupid) to copy one of the files (chooser) over from 
my other redhat box but that didn't work.  When I tried to move the bad one I 
got "mv: 'chooser' has unknown file type" and when I tried to rm it the 
system flat out refused saying: "rm: cannot unlink 'chooser':  Operation not 
permitted"  (this was all done as root)

Here is what the corrupt files look like:  (oh, if I try to do less -f on 
them, less returns 'read error')

?-w--ws-wT  54938 3600471706 3600471706 3600471706 Dec 29  1947 chooser
?-w--ws-wT  54938 3464091290 3464091290 3600471706 Dec 29  1947 conttest
s--srws--t  52857 3048656505 3048656505 3464089209 Sep  3  1943 desktopconv
dr-------T  430 1179656  1573314         0 Jan  1  1970 extensionproxy
?rw--wsrwT  63390 4015912862 4015912862 4154390430 Jul 18  1965 kaccess
?r-s-wsr-t  61277 3879530333 3879530333 4015910749 Feb 26  1961 kaddressbook
?r--rwsr-T  59196 3877431100 3877431100 3879528252 Nov  1  1956 kate
?r---wsr-T  57083 3738953500 3738951419 3877431068 Jun 12  1952 kbanner.kss
?-ws-ws-wt  57051 3602570971 3602570971  2384896 May 19  1952 kblankscrn.kss
?-w-rws-wT  54970 3464091322 3464091322 3602568890 Jan 22  1948 kblob.kss
s--srws--t  52857 3461992057 3461992057 3464089209 Sep  3  1943 kbouboule.kss
s--s-ws--t  52825 2197868121 839257   3461992025 Aug  9  1943 kcheckpass
?-w------T   12 2784236696 819968    1572992 Dec 30  1980 kcminit
-----w----  37148 2751496193 583446   4294967300 Dec 31  1969 kcontrol
?----wx-w-   26 1248395326 1248395326   541440 Jan 10  1970 kdcop
d--sr-x--t  19049 3048622697 3048622697 1248414313 Jul 24  2009 kdebugdialog
?rw-rwSrw-  46518 4294948278 4294948278 3048650166 Jul  4  1930 kdeeject
?rwsrwsrwt  65535 4294967295 4294967295 4294967295 Dec 31  1969 kdeprintfax
?rwsrwsrwt  46518 4154392575 4154392575 4294967295 Dec 31  1969 kdesktop
?rw--wsrwT  63390 4018010014 4018010014 4154390430 Jul 18  1965 kdesu
?r-srwsr-t  61309 4018007933 4018007933 4018007933 Mar 23  1961 kdesud
?r-srwsr-t  61309 4015910781 4015910781 4018007933 Mar 23  1961 kdm
?r-s-wsr-t  61277 4015910749 4015910749 4015910749 Feb 26  1961 kdm_config
?r--rwsr-T  59196 3879528252 3879528252 3879528252 Nov  1  1956 kdmdesktop
?r-s-wsr-t  61277 3879530333 3879530333 4015910749 Feb 26  1961 kdm_greet
?r--rwsr-T  59196 3879528252 59196    3879528252 Nov  1  1956 keditbookmarks
?r--rwsr-T  59196 3877431100 59196    3879528252 Nov  1  1956 keditfiletype
?r---wsr-T  59164 3877431068 59164    3877431068 Oct  8  1956 kfmclient
?r---wsr-T  59164 3741050652 59164    3877431068 Oct  8  1956 kfmexec
?-wsrws-wt  57083 3741048571 57083    3741048571 Jun 12  1952 khelpcenter