Kingston 8GB Pen drive

Write delay failed...

That is a sign of corrupted memory. Try to run a scan disk on it.

Assumed: Drive letter for the pen drive is G: (If it is not f then replace G with the correct drive letter)

Start > Run > CMD (Click ok, if done proper you will get a black box)
in the black box type in:
 chkdsk f: /f /r /x
It will really look something like this
C:\Documents and settings\Administrator\chkdsk G: /f /r /x

After typing f:/f//r/x the message displays the type of the file is RAW.
CHKDSK is not avalilabe for RAW Devices