[Sony Xperia S, Acro S, Ion] shineworld:
I don't know what's happens but recently Flashtools on my Linux Ubuntu 10.04LTS has finished to work fine.

At now, when I try to flash a rom I obtain:

12/045/2012 18:45:05 - INFO - <- This level is successfully initialized

12/045/2012 18:45:05 - INFO - Flashtool Version 0.8.5.0 built on 2012-06-02 23:00:46

12/045/2012 18:45:05 - INFO - You can drag and drop ftf files here to start flashing them

12/045/2012 18:45:06 - INFO - Device connected with USB debugging on

12/045/2012 18:45:06 - INFO - Connected device : E15

12/045/2012 18:45:06 - INFO - Installed version of busybox : BusyBox v1.19.4-cm7 bionic (2012-02-04 22:27 +0100) multi-call binary.

12/045/2012 18:45:06 - INFO - Android version : 2.3.7 / kernel version : 2.6.29.6-Alfs

12/045/2012 18:45:06 - INFO - Root Access Allowed

12/045/2012 18:45:19 - DEBUG - (MyLogger.java:106) - <- This level is successfully initialized

12/045/2012 18:45:24 - DEBUG - (firmSelect.java:102) - Adding X8_Alfs-v08a-CM7.ftf to list of firmwares

12/045/2012 18:45:24 - DEBUG - (firmSelect.java:102) - Adding E15_nAa-11_2.6.29.6-nAa-11.ftf to list of firmwares

12/045/2012 18:45:24 - DEBUG - (firmSelect.java:102) - Adding X8_Alfs-v08a-GDX_NoCap.ftf to list of firmwares

12/045/2012 18:45:24 - DEBUG - (firmSelect.java:102) - Adding X8_09-GDX_Alfs&Djnilse.ftf to list of firmwares

12/045/2012 18:45:24 - DEBUG - (firmSelect.java:102) - Adding X10_V1_BLRelock.ftf to list of firmwares

12/045/2012 18:45:24 - DEBUG - (firmSelect.java:102) - Adding X8_09-GDX-no_fps_cap_Alfs&Djnilse.ftf to list of firmwares

12/045/2012 18:45:24 - DEBUG - (firmSelect.java:102) - Adding X8_Alfs-v08a-GDX.ftf to list of firmwares

12/045/2012 18:45:24 - DEBUG - (firmSelect.java:102) - Adding X8_v9-test-gdx_Alfs&djnilse.ftf to list of firmwares

12/045/2012 18:45:24 - DEBUG - (firmSelect.java:102) - Adding E15_nAa-ics-02_2.6.29.6.ftf to list of firmwares

12/045/2012 18:45:24 - DEBUG - (firmSelect.java:102) - Adding E15_nAa-ics-03_2.6.29.6.ftf to list of firmwares

12/045/2012 18:45:24 - DEBUG - (Bundle.java:63) - Creating bundle from ftf file : /home/shine/android/FlashTool/firmwares/X8_Alfs-v08a-CM7.ftf

12/045/2012 18:45:24 - DEBUG - (Bundle.java:74) - Added this entry to the bundle list : loader.sin

12/045/2012 18:45:24 - DEBUG - (Bundle.java:74) - Added this entry to the bundle list : kernel.sin

12/045/2012 18:45:24 - DEBUG - (firmSelect.java:137) - Adding kernel.sin to the content of X8_Alfs-v08a-CM7.ftf

12/045/2012 18:45:24 - DEBUG - (firmSelect.java:137) - Adding loader.sin to the content of X8_Alfs-v08a-CM7.ftf

12/045/2012 18:45:30 - DEBUG - (Bundle.java:63) - Creating bundle from ftf file : /home/shine/android/FlashTool/firmwares/X8_Alfs-v08a-GDX.ftf

12/045/2012 18:45:30 - DEBUG - (Bundle.java:74) - Added this entry to the bundle list : loader.sin

12/045/2012 18:45:30 - DEBUG - (Bundle.java:74) - Added this entry to the bundle list : kernel.sin

12/045/2012 18:45:30 - DEBUG - (firmSelect.java:137) - Adding kernel.sin to the content of X8_Alfs-v08a-GDX.ftf

12/045/2012 18:45:30 - DEBUG - (firmSelect.java:137) - Adding loader.sin to the content of X8_Alfs-v08a-GDX.ftf

12/045/2012 18:45:32 - DEBUG - (firmSelect.java:359) - Choosed bundle X8_Alfs-v08a-GDX.ftf

12/045/2012 18:45:32 - INFO - (firmSelect.java:360) - Selected X8_Alfs-v08a-GDX.ftf

12/045/2012 18:45:32 - INFO - (FlasherGUI.java:1084) - Preparing files for flashing

12/045/2012 18:45:32 - DEBUG - (Bundle.java:268) - Created the prepared folder

12/045/2012 18:45:32 - DEBUG - (Bundle.java:226) - Saving entry kernel.sin to disk

12/045/2012 18:45:32 - DEBUG - (BundleEntry.java:38) - Streaming from jar entry : kernel.sin

12/045/2012 18:45:32 - DEBUG - (Bundle.java:229) - Writing Entry to ./firmwares/prepared/kernel.sin

12/045/2012 18:45:32 - DEBUG - (Bundle.java:226) - Saving entry loader.sin to disk

12/045/2012 18:45:32 - DEBUG - (BundleEntry.java:38) - Streaming from jar entry : loader.sin

12/045/2012 18:45:32 - DEBUG - (Bundle.java:229) - Writing Entry to ./firmwares/prepared/loader.sin

12/045/2012 18:45:32 - ERROR - (FlasherGUI.java:1104) -

Have you a solution ?

PS: for programmer I can share my Linux with Teamviewer if that help in debug :)