Just for the record, I've been using a one-week old version nightly built of 5.1 on Ubuntu 10.04 daily during last week and didn't experience any slowdowns. (on a reasonably fast 2.6 GHz i7 920 with 6GB RAM, though)
So the slowdown must be specific to Ubuntu 10.10 or your configuration. Best, Erich > I am having a problem with my drracket editor running extremely slow. I am > using ubuntu 10.10. I downloaded the latest version of racket (5.1) I used > to have (5.0). Ever since then my editor is super slow. I don't know if > their is coincidence or the reason why. For example, I try to highlight 3 > lines of code in the drracket editor and it literally takes 6 seconds to > finishing highlighting!(I click and drag the mouse). If I hit enter say 20 > times then it takes close to a minute to execute all of the enter commands. > The bottom part of running the program is fast, it is just the top part > (editor) that is slow. Does anyone know what the problem might be? _________________________________________________ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/users

