Mac terminal problems

I have a mac os x 10.6.8 when  I use the terminal it seems to work responding to the commands given to it . But as i was writing something the next line it asked me for my password But refused to let me type it!!
any help would be a geat help thanks

Here's an example:
johns-MacBook:~ john$ sudo nvram -p 
WARNING: Improper use of the sudo command could lead to data loss or the deletion of important system files. Please double-check your typing when using sudo. Type "man sudo" for more information. 
To proceed, enter your password, or type Ctrl-C to abort.
Password:
At that point, simply type your password followed by the return key. What you type remains invisible, unlike most websites that echo •••• characters.

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    Hi,
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    http://picasaweb.google.com/andy.black10/Misc#5407855064094337554
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    BY THE WAY, if the script output contains any sensitive login info, you might want to change your password on the Pharamcy OSU system
    It looks like there is a Terminal problem handling Scrolling Regions as set by <esc>[1;24r. It looks like <esc>[0J is not erasing from the current cursor position to the end of the display, but rather it starts the erase above the current cursor position. The erase behavior without a scrolling region appears better, but not perfect.
    I would encourage you to file a bug with Apple at either:
    <http://www.apple.com/feedback/macosx.html>
    or
    <http://bugreporter.apple.com>
    Free ADC (Apple Developer Connection) account needed for BugReporter
    The BugReporter would be better.
    If you want, I have a little script that can be used to demonstrate the problem
    #!/usr/bin/env bash
    echo -e "e[1;24re[He[0Je[He[0Je[?6he[1;24re[He[0Jc"
    for j in {1..3}
    do
    echo BEFORE should remain on screen $j $j $j $j $j
    done
    for j in {4..23}
    do
    echo FILLER should be erased $j $j $j $j $j
    done
    echo -e "e[4;24re[He[0Jc"
    for j in {4..23} # our next command prompt will be 24th line
    do
    echo AFTER should remain on screen $j $j $j $j $j
    done
    Here is example output from Terminal:
    BEFORE should remain on screen 1 1 1 1 1
    AFTER should remain on screen 4 4 4 4 4
    AFTER should remain on screen 5 5 5 5 5
    AFTER should remain on screen 6 6 6 6 6
    AFTER should remain on screen 7 7 7 7 7
    AFTER should remain on screen 8 8 8 8 8
    AFTER should remain on screen 9 9 9 9 9
    AFTER should remain on screen 10 10 10 10 10
    AFTER should remain on screen 11 11 11 11 11
    AFTER should remain on screen 12 12 12 12 12
    AFTER should remain on screen 13 13 13 13 13
    AFTER should remain on screen 14 14 14 14 14
    AFTER should remain on screen 15 15 15 15 15
    AFTER should remain on screen 16 16 16 16 16
    AFTER should remain on screen 17 17 17 17 17
    AFTER should remain on screen 18 18 18 18 18
    AFTER should remain on screen 19 19 19 19 19
    AFTER should remain on screen 20 20 20 20 20
    AFTER should remain on screen 21 21 21 21 21
    AFTER should remain on screen 22 22 22 22 22
    AFTER should remain on screen 23 23 23 23 23
    and here is example output from iTerm:
    BEFORE should remain on screen 1 1 1 1 1
    BEFORE should remain on screen 2 2 2 2 2
    BEFORE should remain on screen 3 3 3 3 3
    AFTER should remain on screen 4 4 4 4 4
    AFTER should remain on screen 5 5 5 5 5
    AFTER should remain on screen 6 6 6 6 6
    AFTER should remain on screen 7 7 7 7 7
    AFTER should remain on screen 8 8 8 8 8
    AFTER should remain on screen 9 9 9 9 9
    AFTER should remain on screen 10 10 10 10 10
    AFTER should remain on screen 11 11 11 11 11
    AFTER should remain on screen 12 12 12 12 12
    AFTER should remain on screen 13 13 13 13 13
    AFTER should remain on screen 14 14 14 14 14
    AFTER should remain on screen 15 15 15 15 15
    AFTER should remain on screen 16 16 16 16 16
    AFTER should remain on screen 17 17 17 17 17
    AFTER should remain on screen 18 18 18 18 18
    AFTER should remain on screen 19 19 19 19 19
    AFTER should remain on screen 20 20 20 20 20
    AFTER should remain on screen 21 21 21 21 21
    AFTER should remain on screen 22 22 22 22 22
    AFTER should remain on screen 23 23 23 23 23

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    Message was edited by:
    ahbeng78

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