nodejs from 0.6.19 to 0.8.0: App crashes upon start

I'm developing an application (nodejs+mongodb+backbone) and my system runs archlinux. Up until this morning I was on nodejs v 0.6.19-1 and my code ran peacefully.

Then i updated my system and nodejs v 0.8.0 got installed.

Soon after the update I got the following error while launching my app:

node: /usr/include/node/node_object_wrap.h:62: void node::ObjectWrap::Wrap(v8::Handle): Assertion `handle->InternalFieldCount() > 0' failed.

Tried to debug and saw that the error is thrown when loading a module. This module has the following requirements:

var fs = require('fs')
    ,User = mongoose.model('User')
    ,Connection = require('tedious').Connection
    ,TYPES = require('tedious').TYPES
    ,Request = require('tedious').Request;

Unfortunately I'm not skilled enough to dig deeper (this is my first project with the whole stack and with javascript).

Now I can live rolling back to 0.6.19-1 but, I guess, sooner than later I'll be in need to update, so ...

Tried googling about that specific error but I couldn't came up with any hints on what to do.

Thanks in advance for your help