Share your experience!
Xperia Arc 2.3.4 (4.0.1.A.0.283) Update Available for both LT15i LT15a (thanx BR4DOKYBrazil for the link and XDA forum datagubben for the file)
http://forum.xda-developers.com/showthread.php?t=1269910
Global Generic version
http://forum.xda-developers.com/showthread.php?t=1269937
LT15a (american version)
http://forum.xda-developers.com/showthread.php?t=1319764
Here are some screenshots/pictures:
I have the new firmware 4.0.1.A.0.238 LT15i updated via PCC today.
Seems snappier (wishful thinking).
3D panorama (Did not work yet for me).
3D gallery app.
Screenshots in power menu.
New time widget.
Facebook share integration stuff.
Swype keyboard.
Here is 4.0.1.A.0.238 Nordic_Telia.ftf for flashing:
get the Flashtool From here
http://forum.xda-developers.com/showthread.php?t=920746
Install it and you will see 5 folders
Custom
Drivers
Firmwares
Loaders
X10Flasher_lib
take the firmware to the "Firmwares" folder
click on Falsh
Press Ok
it will ask you to connect your phone on Flashmode (turn off your phone, press the back button, then connect the USB) press OK
This is an step by step guide
well yup with more updates..se removes the older but gud features..dont know why....
I may hold off updating for a short while seeing that there are some issues being reported.
I don't want to spend time upgrading and downgrading.
If you have downloaded the LT15i_4.0.1.A.0.283_Generic Global.rar file which then when expands to a ftf file and used that, I believe that is the correct file
now its solved 
i cleared the fb data..the logged in again..
and now i have images of all my fb contacts in my phone contatcs 
i havent downloaded the genric one yet 
i''ll do it 2moro..
and if uliwooly cant find the difference b/w the other version and the global version i'lll stick to this only :smileygrin:
and yeah fb issue is solved..
and so far no other problems 
you are forgettimg something...
zoom in video mode 
just checked it 
The keyboard remains in bold and is no longer the animation CRT?!?
Ok.
I noticed your build number is ending with 238 instead of 283.You may want to update it.