have you tried chmod +x on the file in question?

Who owns this file?

(after it is mounted)

You do know that Flash-media has a relatively short lifetime (a relatively small amount of write operations)?
I read a figure of 100.000 once - maybe more but not much compared to a harddisk...
When you run an application on such media (an exe which creates files...) and there are many such operations you could very fast be at the end of the lifetime of the device - these where originally intended for storage of data to carry it with you, not to be used as a harddisk-replacement.

Did you check if your usb stick is mounted with the "noexec" option (see my post above)? This makes running executables from there impossible...

How do I look in the mount options -- to see if the memory stick is mounted with the "noexec" option which will prevent me from executing files from there.

Also I am the owner
-rwxr-xr-x 1 kenneth kenneth 1065740 2005-12-02 04:07 clock

Thanks

The command you type is simply:
mount
and it shows all mounted filesystems along with where they are mounted and with what options.
If you need to change mount options permanently you:
-unmount the device
-change /etc/fstab -> put in what you want to be different
-mount the device again

You could also try to unmount and remount it manually. Something like
See "man mount" for further explanations of the options and be sure the mount point exists when doing this.

Thanks it finally worked fine.

thank you!!! i've been trying to change the permissions on my windows FAT32 partition for about an hour now, and this post was the ticket. i used partition magic to cut my NTFS partition into two and make one a FAT32 for my shared windows/linux junk (works fine, no data loss), and it was a bitch to figure out how to change the permissions. i'll show you what i did, using the exact commands i entered (/dev/hdd5 is my fat partition, and /media/fat is where i mounted it)

to sum up: first, unmount the fat partition with "sudo umount /dev/hdd5". then, edit fstab with "sudo gedit /etc/fstab", adding the line with the umask tag for the fat partition "/dev/hdd5 /media/fat vfat umask=000 00". save and exit. now, mount everything as per the contents of the fstab file with "sudo mount -a". you'll find your unruly fat partition now readable/writable by ALL users.

Mine works fine. The only thing that every time I reboot or insert USB Media Stick in new pc, it looses some permissions, so i have to enter su:

umount /dev/sda1
mount -t ext2 -o rw,suid,dev,exec,async /dev/sda1 /media/usbdisk

Then all works fine

Can i do something so that it keeps these permission or add those lines somewhere so that when the system boots, it does those 2 line automatically?

Thanks in advance.

Any one with suggestions?

put those options into the line for /dev/sda1 in /etc/fstab

Can you please specify and tell me exactly. You mentioned /etc/fstab. I am still new a newbie. This is what I usually type:

umount /dev/sda1
mount -t ext2 -o rw,suid,dev,exec,async /dev/sda1 /media/usbdisk

/etc/fstab is the file which describes which device should be mounted to which directory and with what options.
Editit with any editor you like.
a sample from mine:
I have commented this out now (#), because my USB-stuff gets automounted in Gnome - just an example
first is the device - then the mount-point - then the filesystem-type - then the mount-options - read about the numbers at the end and a more comprehensive explanation in:
Your line would look like:
the "users" is there so everyone can mount and unmount it

go to the ubuntu wiki if you're confused and search for "permissions". i put a section at the bottom of that page for changing permissions for FAT partitions in the /etc/fstab file. it should work with all volumes.

In short, if you don't add an entry to the fstab file, when your system re-boots, it will not get mounted, ie you'll have to manually re-type that line every time.