Rails - Aug 2006 - rake works but rake test:units fails, strange trace

Hi,
When I run rake, everything works fine but when I run rake test:units  
I get an error apparently while it''s trying to create db tables  
saying the table already exists. I ran rake with trace to see the  
differences. It appears that rake test:units does db:schema:load  
twice, maybe that is the problem? Anyone know why this might be?  
Output of trace below

Rake
** Invoke default (first_time)
** Invoke test (first_time)
** Execute test
** Invoke test:units (first_time)
** Invoke db:test:prepare (first_time)
** Invoke environment (first_time)
** Execute environment
** Execute db:test:prepare
** Invoke db:test:clone (first_time)
** Invoke db:schema:dump (first_time)
** Invoke environment
** Execute db:schema:dump

Rake test:units
** Invoke test:units (first_time)
** Invoke db:test:prepare (first_time)
** Invoke environment (first_time)
** Execute environment
** Execute db:test:prepare
** Invoke db:test:clone (first_time)
** Invoke db:schema:dump (first_time)
** Invoke environment
** Execute db:schema:dump
** Execute db:test:clone
** Invoke db:schema:load (first_time)
** Invoke environment
** Execute db:schema:load