Bugzilla working? Strange exception behaviour

Hello all,

I was wondering, is our bugzilla already "in
production use" or not?

I was playing with the new V0.1.0 and stumbled across
a small bug. Not sure if it is critical but mildly
confusing.
(in interactive console)

--------------------
>>> 5.len()

Uncaught exception:
--- File: 5len-src.txt, line: 1, char: 8
Function not found Error, Function `len not found.
--------------------

What 'file' is this?

Also, the type of error is not always reported, eg:

--------------------
>>> 23 /0

Uncaught exception:
--- File: 230-src.txt, line: 1, char: 6
>>>
--------------------

At another point:

--------------------
>>> 23 / 0
Divide by zero Error,
Uncaught exception:
--- File: 230-src.txt, line: 1, char: 7
>>> dg
Divide by zero Error,
Uncaught exception:
--- File: dg-src.txt, line: 2, char: 1
Program Error, attribute `dg not found.
--------------------

Why is 'dg' a divide by zero Error? Refering to
previous error perhaps?

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