When you are viewing transactions, and you change the sort order of one of the columns it is sorted purely on that column.
e.g. If you sort by date, and then choose to sort by value it doesn't remember the previous date sorting.
As such if you have lots of transactions of the same amount, the date order is mixed up randomly.

Need a setting to:
a) remember the previous sorting (or always include date sorting on top of another column sorting)
b) option to sort by multiple columns (e.g. Description then by Category then by Date) - either desc or asc

In the below example (for my duplication checking) it would have been helpful to have the two 17/04/2013 transactions together.

There are additional right-click sorting options, but this combination doesn't exist. Should be more flexible so any combination can be used.