Multi-currency problems 1 of 2

[TC]

I've trying to move from Quicken to Gnucash. Multicurrency is important 
to me so I've been testing that it works OK and I've run into a couple 
of problems (possibly caused by how I'm doing things). This email 
describes the first.

I set up four test accounts - "US Dollar Bank" and "UK Sterling Bank"
(both of type Bank and with the relevant currency), and "US Dollar 
Opening Balances" and "UK Sterling Opening Balances" (both of type 
Equity, and again with the relevant currency).

I place opening balances of 1000 dollars and 1000 pounds in the US and 
UK banks respectively.  That's all; really simple - no other 
transactions.  I then ask for an "Account Summary" report (under the 
Tools menu).

PROBLEM: The resulting report shows that only the "US Dollar Bank" has 
any money in it.

Note that my "Default Report Currency" setting is US Dollars (in 
Edit->Preferences->International).  If I *change* that setting to be GB 
Pounds, then a new "Account Summary" report will show the proper value 
for the "UK Sterling Bank" but now the "US Dollar Bank" will be wrong. 
I can't get both accounts to show their contents properly.  I've made 
sure that both opening balance dates are the same, and that my report 
covers that date.  I've also made sure that there is a "Price" entry for 
the GBP commodity (my overall default currency is USD). N.B. In the 
actual Accounts tree display, both accounts look fine.  The problem 
arises only when I ask for the "Account Summary" report.

So, am I doing something wrong?

thanks,
tc