Hi, There have been a number of reports of RMySQL crashing R when attempting to connect to a MySQL server using dbConnect(). The problem appears to be in some binary versions of the MySQL client library. Known instances include (1) Red Hat MySQL binary RPM client library 3.23.32, but updating to 3.23.56 solved the problem. (2) Debian MySQL binary client library 3.23.49, but updating to 3.23.56 solved the problem. Moreover, the change logs in Appendix D of the MySQL manual (www.mysql.com) indicate that two bugs consistent with the crashes we've seen were fixed in 3.23.50, namely, a "buffer overflow problem when reading startup parameters" and a "memory allocation bug in the glibc library used to build Linux binaries". If you experience this problem, could you let me know the version information (R, MySQL, and the operating system)? Also, I'd like to know if updating the MySQL client library and re-installing RMySQL fix your problem. Thanks, -- David PS Thanks to Deepayan Sarkar, John Heuer, and Matthew Kelly for helping me track this problem.