Speeding Up CreateFromDocument?

CreateFromDocument() takes upwards of 20 minutes to finish processing a 240 line xml document whose tree depth never exceeds 6.  The function also seems to be a voracious consumer of memory, sucking down hundreds of megs during the course of its operation - this seemed fishy to me, so I thought I'd ask if I should be expecting any differently.  Should I be?

Oh, Also:
I am running on a 3.6GHz machine with 3.5 GB of memory.  The schema for which I have generated bindings can be found here: http://cse.unl.edu/~bkutsch/3_0_Final.xsd

Thanks for any assistance.  Also, if this does turn out to be a bug, I will certainly submit a ticket.

Just glancing at your xsd, I expect you're running into this one.  If this seems plausible to you, please add a comment to that ticket, especially providing information on your need for a solution (importance to you and when you need a working solution).  Fixing this won't take more than a day or two, but right now I'm caught up in real work for which I'm sorta getting paid, so that's taking priority.

Version 1.1.1:

pyxb[91]$ sh test.sh
urn:uuid:07f553ca-6c01-11df-9271-001636553c48
Python for AbsentNamespace0 requires 1 modules
Saved binding source to ./airs.py
pyxb[92]$ python -O rdairs.py
Read took 0.00099802 seconds
Conversion took 183.381 seconds
Conversion took 182.048 seconds
Conversion took 180.356 seconds
pyxb[93]$

Version 1.1.2:

pyxb[109]$ sh test.sh
urn:uuid:5adfb5a2-6c02-11df-81df-001636553c48
Python for AbsentNamespace0 requires 1 modules
Saved binding source to ./airs.py
pyxb[110]$ python -O rdairs.py
Read took 0.00171113 seconds
Conversion took 0.298372 seconds
Conversion took 0.125777 seconds
Conversion took 0.128435 seconds
pyxb[111]$

I'm pretty happy.