The acoustic version of On Fire can be found on the Rebound CD single.
E|--------------------------------------------------------------------------------|

       G    D    Bm   C
E|----3----2----x----0--------------------------------------------------------|
B|----0----3----3----1--------------------------------------------------------|
G|----0----2----4----0--------------------------------------------------------|
D|----0----0----4----2--------------------------------------------------------|
A|----2----0----2----3--------------------------------------------------------|
E|----3----x----x----x--------------------------------------------------------|

[Riff 1]
        G            D         Bm        C
E|--------3-3-3-3-----2-0-----------------------------------------------------|
B|--------0-0-0-0---3----3------3-3-3----1-0----------------------------------|
G|--------0-0-0-0-0-2-----------4-4-4-------0---------------------------------|
D|--------0-0-0-0-0-0---------4-4-4-4-0-2-------------------------------------|
A|----------------0--------0--2-2-2-2-0-3-------------------------------------|
E|-----3----------------------------------------------------------------------|


[Riff 1]

G                   D
  My opinion could change today
Bm                  C
  I'm responsible anyway
G                       D
 for second to third-hand information
Bm                            C
  that complicates the complication

(strum C for another line or so)

G                 D
I don't think before I speak
       Bm                C
and I don't know how far my words reach
G                  D
  So wrong nearly every time
         Bm               C
that I'm sorry I speak my mind

Bm                C
If what I said is unkind

            D                Bm
And now it feels like I'm on fire
       C                    D
These words are not the truth
                   Bm
Don't hold it against me
         C              D
cause I know you're lying too

D Bm C D

        G             D
Is there any need for apologies
Bm                         C
  There's no reason to believe
G                      D
Judgments born of my jealous mind
Bm           C
  Creeping inside outside
G                       D
Connections I've made never follow through
Bm                        C
and sooner or later disappoint you
G                          D
Cross you twice when your back is turned
Bm               C
  That's how I'll love you

Bm                      C
And someone has got to be hurt

   D                        Bm
Now it feels like I'm on fire
C                D
It's burning the world through
             Bm
Don't let me fall
        C                  D
without someone to hold onto
C                  D
Someone to hold onto
C                  D
Someone to hold onto