vim - gdb communication problem

Hi All.

I am using vim with gdb through expect script.

I have key mapped to sh script which call expect script which call gdb which call my console application.

vim -> sh -> expect -> gdb -> myApplication

So when I pressing ;d in vim I got GDB with my application started and breakpoint set to string where vim cursor pointed.

I am using the folowing code in my expect script.  

trap interact {SIGQUIT}

This allow me to stop expect script manually by pressing Control-\ which sends SIGQUIT to expect and give control to me.

I am migrating from fedora core 4 to ubuntu 11.10.

And all works except one issue:

When I press Control-\ in ubuntu I got not gdb or application on the screen but I got messed screen with vim and gdb and my application.

And it messed while I not send SIGKILL to vim.

Here is terminal settings for both OS:

Ubuntu 11.10:

c@cwd:~$ stty -a

speed 38400 baud; rows 55; columns 167; line = 0;

intr = ^C; quit = ^\; erase = ^?; kill = ^U; eof = ^D; eol = <undef>; eol2 = <undef>; swtch = <undef>; start = ^Q; stop = ^S; susp = ^Z; rprnt = ^R; werase = ^W;

lnext = ^V; flush = ^O; min = 1; time = 0;

-parenb -parodd cs8 -hupcl -cstopb cread -clocal -crtscts

-ignbrk -brkint -ignpar -parmrk -inpck -istrip -inlcr -igncr icrnl -ixon -ixoff -iuclc -ixany -imaxbel iutf8

opost -olcuc -ocrnl onlcr -onocr -onlret -ofill -ofdel nl0 cr0 tab0 bs0 vt0 ff0

isig icanon iexten echo echoe echok -echonl -noflsh -xcase -tostop -echoprt echoctl echoke

Fedora Core 4:

c:~% stty -a

speed 38400 baud; rows 55; columns 167; line = 0;

intr = ^C; quit = ^\; erase = ^?; kill = ^U; eof = ^D; eol = <undef>; eol2 = <undef>; start = ^Q; stop = ^S; susp = ^Z; rprnt = ^R; werase = ^W; lnext = ^V;

flush = ^O; min = 1; time = 0;

-parenb -parodd cs8 -hupcl -cstopb cread -clocal -crtscts

-ignbrk -brkint -ignpar -parmrk -inpck -istrip -inlcr -igncr icrnl ixon -ixoff -iuclc -ixany -imaxbel

opost -olcuc -ocrnl onlcr -onocr -onlret -ofill -ofdel nl0 cr0 tab0 bs0 vt0 ff0

isig icanon iexten echo echoe echok -echonl -noflsh -xcase -tostop -echoprt echoctl echoke

I can't understand what is wrong. Could you please help me to resolve the issue?

Thanks

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