[racket] DrRacket install troubles Ubuntu 12.04

hello all; I have installed DrRacket on Ubuntu 12.04 via apt-get and am
running into some troubles. I find that while I can run it with
root privileges fine, if I try to run the program as a normal user the
program crashes with an error : "SIGSEGV MAPERR si_code 1 fault on addr
0xd8 Aborted (core dumped)" Has anyone seen this before and can assit? I am
using Racket v5.3.5
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