Hi Mike,

There have been some changes to R when it comes to SSL compatibility:

http://cran.r-project.org/web/packages/Rlabkey/NEWS

Regarding your RCurl call itself, have you made sure you've done the following?

1.) Set the RCurl call to use "sslversion=3L"
2.) Set the RCurl call to also use "ssl.verifypeer=TRUE"

Give this a try and let us know how it goes.

Regards,

Jon