Well it's always good to review your old stuff: http://www.sitefinity.com/devnet/forums/sitefinity-4-x/bugs-issues/script-combining-a-bad-idea.aspx
I wanted to check how 5.1 sp1 would work. However I don't seam to get a difference in the amount of scripts delivered if I set the value of ScriptCombining to true or false.
uploaded web.config when setting to true.
Therefore I was wondering what you usually set and if this setting still has any effect.