Here is another minor improvement, though I don't know if many will get much use out of this one.
Change the contents of
skin1/customer/main/alter_currency_value.tpl to the following to eliminate the {math} function:
Code:
{if $alter_currency_value eq ''}{assign var='alter_currency_value' value=0}{/if}{if $config.General.alter_currency_symbol ne ''} ({$config.General.alter_currency_symbol} {assign var='alter_price' value=$alter_currency_value*$config.General.alter_currency_rate}{$alter_price|formatprice:',':'.'|string_format:'%.2f'}){/if}
A more useful modification might be in
skin1/customer/main/cart.tpl where you can also replace:
Code:
{math equation="price*amount" price=$price amount=$products[product].amount format="%.2f" assign=unformatted}{include file='currency.tpl' value=$unformatted}
With:
Code:
{assign var='unformatted' value=$price*$products[product].amount}{include file='currency.tpl' value=$unformatted|string_format:'%.2f'}
Note that these only works if you have Smarty 2.6.5 or later installed.