[R-sig-hpc] R hangs when I run 'rmSessions()'

[Megh Dal]

Dear all, I am having a strange problem with doSMP package. When I start a fresh R console and run 'workers <- startWorkers(2)' I come up a warning message: there is an existing doSMP session using doSMP1 

Why I should get that message as I start a fresh work into R?

Next when I try to disable that with rmSessions("doSMP1"), R hangs.

Can somebody share any such similar problem? How you then resolved it? If I do not run rmSessions("doSMP1") at all then would I get any problem? Can I still utilize my dual core for my calculation? I am using windows vista with latest R 2.13.1

Thanks for your help