Trimming lines generally means selecting the cutting lines followed by the lines to be cut.  All that works fine.

There is a shortcut, common to AC, whereby you double click on the tool and can then pick any segment to trim.  It's a great time saver and in AC I use it all the time.  The same functionality exists in DS but it is very clunky and oh so slow.  I tried it just now on a five sided closed polyline and the system is still whirring away as I write (after having logged in and everything!)  I generally know that it is not actually a shortcut by any normal definition of the word in DS so I avoid using it.

Does everyone have this problem?