arrow key work strange

[lin q]

Hi,
  I am new to cygwin and find a problem annoying. I have version 1.5.11 
installed on my windows XP. I find 2 things in using the BASH command 
history feature.

  1) when I press "UP Arrow" key, there is no history command show up. I 
must press several times "DOWN arrow" key, and then "UP arrow" works.

  2) when the history command shows up, it is very awkward to use LEFT, 
RIGHT and BACKSPACE keys. they do not work in normal way. Sometime LEFT and 
RIGHT key erase characters while BACKSPACE does not!

  I run "set -o" and I see that "vi","history" and "hisexpand" are "on".

  Is there any other way I can check if my setting is wrong?

Thanks.

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