[racket] Online compilation button missing on 5.3.1 and Lubuntu 12.04?

On Fri, Nov 23, 2012 at 11:03 AM, Grant Rettke <grettke at acm.org> wrote:
> On Fri, Nov 23, 2012 at 10:58 AM, Robby Findler
> <robby at eecs.northwestern.edu> wrote:
>> Do you have more than 1 core?
>
> No, single core. Enjoying using Racket and friends running very fast
> and pleasantly on an old but fast laptop.

That explains it, then. It isn't available unless there are at least 2
cores (it would be painfully sluggish without parallelism, I believe).

Robby