R crashes in Leopard

Hi,

I have upgraded to Leopard and I just installed 2.6.1.  I opened R 
and then I opened package installer and clicked "get List".  After 
about five seconds R stopped responding. and Leopard reported that R 
had stopped responding and wanted to sent a report to Apple.  What do 
I need to do get a list of packages so I can download and install 
them?

Thanks,

Keith Jones