There's a new version of x2vnc available. Increasing the version number of the ebuild file is sufficient to make it build. Couldn't test it yet, but should be fine for ~x86.
1.5.1 is out now too, increasing the ebuild version number works for me. There is a problem that version 1.3.1 was released in portage as 1.31. Portage thinks that 1.5.1 is a downgrade, because 31<5
Hm... what about masking 1.31 and copying it to 1.3.1? Btw, 5 < 31, not > :-)
Done that. Please tell me if you have any problems with 1.5.1, I didn't. If no, I think we can mark that as stable. Closing this bug.
1.5.1 is stable for me.