If you have two colums with name and an amount like this e.g.:

3	expense
5	income  
1	debt
6	income
4	expense
2	debt

and you sort it (ascending) by the second column (the one with names) the 
numbers should in this case result in (like in Excel):

1	debt
2	debt
3	expense
4	expense
5	income  
6	income

Note that I didn't sort by the number colum but by the names which in this case 
gives the same result.

HOWEVER Calc shuffles the lines individually and it seems the former individual 
order is not kept. Open Office gives you this unpredicable result:

2	debt
1	debt
3	expense
4	expense
6	income
5	income  

even though each pair of rows with the same word in the second column, was 
listed with the lowest number in the top of the two. So two of the pairs' 
individual placement has been changed for no apparent reason - and it's even 
inconsistently as the "expense" pair was NOT swapped as with the other two... 
very confusing and cause for alot of toruble and misunderstandings in my line of 
work.

Cheers
-- David