It'd be nice if the number of things you see on a page in the back office was a variable in a file in the conf folder instead of hard-coded in whatever files they live in.
[list]
The Write tab, both Post list and Full posts subtabs.
The Blog settings tab User permissions subtab.
The Stats tab Direct B-hits and User agents subtabs count to 20 then make a new page.
The Antispam tab.
The Users tab.[/list:u]
Personally I'd like to make them show me 50 at a time. Others might want to go even longer. In a perfect world each would have it's own variable, but I'd be happy with one variable that makes all of them flex, instead of having to find and hack each one.
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It could be a UserSetting and then this would be the default for the Results class (which handles those tables).