I did go to the LFS official site, and hey, Patch T is out!
but isn't it just the same as patch S or...?
Do I have to download it again or can i just drive with 'patch S'?
I'm pretty confused...

Patch S = Patch T + 1 day?

You can find there: http://www.lfsforum.net/showthread.php?t=6808

EDIT : Now updated to version T :

- FIX : LFS crash (often during a multi car pile up)
- FIX : LFS crash when starting up with Greek or Norwegian
- FIX : Aston Grand Touring / North showing up as AS6 / AS7
- FIX : Commands /track=as6 and /track=as7 did not work

NOTE : Patch T is fully compatible with Patch S



So you dont have to download it, Patch S works, too. The AS fixes dont affect you anyway.