[wp-testers] Upgrade to 2.3-whitescreen at step 1 - too big post2cat table?

[Boris Anthony]

Hi gang,

We're running a test upgrade of globalvoicesonline.org, from 2.2 to 2.3.
Within about 5 seconds after hitting "Upgrade Wordpress" we get  
either a totally blank screen or just the head part of what should be  
shown (WP logo, grey back ground, then nothing) (We've started over a  
few times heh)

Peeking into the database, the 3 new terms tables are created, terms  
and term_taxonomy are properly populated with all 347 previous  
Categories, but term_relationships is empty.

our post2cat table counts 169,552 records (just over 10meg). I am  
guessing it's choking on that? It isn't timing out, to be clear. It  
just dies unceremoniously, I suspect, as soon as it considers trying  
to convert the post2cat data. ;)

any insights/wisdom appreciated!

B.