Steps to reproduce:
1. start ldtp server in a terminal .. 
2. On a new terminal, run this script, which should launch gedit from the panel 'applications' menu:
from ldtp import *
log('Gedit-Launch','teststart')
try:
    initappmap('gnome-panel.map')
    selectmenuitem('frmTop*Panel','mnuApplications;mnuAccessories;mnuTextEditor')
    time.sleep(3)
    if guiexist('frmUnsavedDocument1-gedit') == 1:
        log('Gedit started successfully','info')
    else:
        log('Gedit cannot be launched','error')
        raise LdtpExecutionError(0)
    time.sleep(3)
    log('Closing gedit..','info')
    if closeappwindow('*gedit') == 1:
        log('Successfully exited gedit','info')
    else:
        log('Cannot exit gedit','error')
        raise LdtpExecutionError(0)
    log('Gedit-Launch','testend')
except:
    log('Gedit-Launch','fail')
    raise LdtpExecutionError(0)
log('Gedit-Launch','testend')   
3. ldtp will quit when it reaches the line  
if guiexist('frmUnsavedDocument1-gedit') == 1: 
which checks if the gedit window is open.. It prints the message :
*** glibc detected *** double free or corruption (!prev): 0x080a28f0 ***
Aborted
before quitting

Platform : 
ubuntu 'dapper drake' beta
gnome 2.14.1
python 2.4.3


Stack trace:

+ Trace 68581

Other information:
for more info see here : http://pastebin.ca/60339