Ubuntu 12.04 64 bit. RipperX and Lame 3.99 from repos.
If I run ripperx from the command line, when the problem occurs I get:
*** stack smashing detected ***: ripperX_plugin-lame terminated
Segmentation fault (core dumped)
The happens randomly, e.g.I can rip the same track 5 times and it will fail 3 times. Different settings in the config don't seem to make any difference.
I also Removed lame and comiled 3.99.5, same problem.
RipperX worked on same hardware when on Ubuntu 11.04 64 bit.