uwsgi不能添加--limit-as配置

使用django+nginx+uwsgi部署项目，uwsgi的启动命令中不能添加--limit-as配置，添加后uwsgi就无法启动，不添加就可以正常启动。
下面是添加 --limit-as=32 后运行时的错误消息：
*** Starting uWSGI 1.1.2 (64bit) on [Thu Apr 26 13:12:43 2012] ***
compiled with version: 4.6.1 on 26 April 2012 10:09:48
current working directory: /home/zzxworld/repository/blog
writing pidfile to /var/run/uwsgi/blog/uwsgi.pid
detected binary path: /usr/local/bin/uwsgi
*** WARNING: you are running uWSGI without its master process manager ***
limiting address space of processes...
your process address space limit is 33554432 bytes (32 MB)
your memory page size is 4096 bytes
detected max file descriptor number: 1024
lock engine: pthread mutexes
!!! uWSGI process 6754 got Segmentation Fault !!!
*** backtrace of 6754 ***
*** end of backtrace ***

盼各位大牛正解。。