I am using dual operating system on a single machine- windows and ubuntu.
There is a folder in windows C:ProgramDataFolder_name which seems to be a virus to me, as it does not get deleted whenever I try to. Also, it comes up again and again even if I try to delete it.

I tried to delete it from ubuntu. and this worked hopefully!!!
But today, I got again the same folder at same location. I again tried to delete it from ubuntu, using

user@user$sudo su

root@user$rm -f /location/to/folder

rm: cannot remove `/location/to/folder': Is a directory

root@user$sudo umount /location/to/folder

umount: /location/to/folder: not mounted

root@user$rm -r /location/to/folder

rm: cannot remove `/location/to/folder': Directory not empty

root@user$ls -a /location/to/folder

ls: reading directory /location/to/folder: Input/output error

So, I tried unmounting it, which says it is not mounted. I tried rm which says it is directory. Can anybody help me please?

EDIT: here is the output with ls -la command when not inside that directory, going inside the directory and executing ls -la command gives the input/output error.

drwx------ 1 ashutosh ashutosh  8192 Apr  2 01:01 .

drwx------ 1 ashutosh ashutosh 24576 Apr  1 23:15 ..

drwx------ 1 ashutosh ashutosh     0 Feb 20 22:00 Adobe

lrwxrwxrwx 2 ashutosh ashutosh    84 Jul 14  2009 Application Data -> /media/10DC42B6DC42963E/ProgramData

drwx------ 1 ashutosh ashutosh     0 Jan 27 02:55 ATI

drwx------ 1 ashutosh ashutosh     0 Mar 20 14:40 Avangardo

drwx------ 1 ashutosh ashutosh     0 Feb 19 02:35 Connectify

drwx------ 1 ashutosh ashutosh     0 Feb 18 02:32 DAEMON Tools Lite

drwx------ 1 ashutosh ashutosh  4096 Apr  2 01:01 DC48CCC40D3C963E0000DC47F0809ABC

lrwxrwxrwx 1 ashutosh ashutosh   120 Jul 14  2009 Desktop -> /media/10DC42B6DC42963E/Users/Public/Desktop

lrwxrwxrwx 2 ashutosh ashutosh   128 Jul 14  2009 Documents -> /media/10DC42B6DC42963E/Users/Public/Documents

drwx------ 1 ashutosh ashutosh  4096 Mar  9 20:40 EPS

lrwxrwxrwx 2 ashutosh ashutosh   128 Jul 14  2009 Favorites -> /media/10DC42B6DC42963E/Users/Public/Favorites

drwx------ 1 ashutosh ashutosh  8192 Mar 13 02:26 Microsoft

drwx------ 1 ashutosh ashutosh  8192 Feb 18 02:35 Microsoft Help

-rw------- 1 ashutosh ashutosh   434 Feb  3 17:49 ntuser.pol

drwx------ 1 ashutosh ashutosh 32768 Feb 18 02:51 Package Cache

drwx------ 1 ashutosh ashutosh     0 Feb 18 03:19 PreEmptive Solutions

drwx------ 1 ashutosh ashutosh     0 Feb 18 02:48 regid.1991-06.com.microsoft

drwx------ 1 ashutosh ashutosh     0 Feb 10 14:44 Samsung

drwx------ 1 ashutosh ashutosh     0 Mar 19 12:05 Skype

lrwxrwxrwx 2 ashutosh ashutosh   200 Jul 14  2009 Start Menu -> /media/10DC42B6DC42963E/ProgramData/Microsoft/Windows/Start Menu

drwx------ 1 ashutosh ashutosh     0 Jan 29 23:28 Sun

drwx------ 1 ashutosh ashutosh     0 Mar 21 03:35 TEMP

lrwxrwxrwx 2 ashutosh ashutosh   196 Jul 14  2009 Templates -> /media/10DC42B6DC42963E/ProgramData/Microsoft/Windows/Templates

drwx------ 1 ashutosh ashutosh  4096 Feb 18 03:21 Windows App Certification Kit