My previous assumption was not completely correct: it seems that nx is not the problem. In fact:
If I log out of the automatically opened session with vnc before I try to connect with nx, at-spi works fine in the nx session. Consequently, I now wonder whether the problem is not that at-spi does not start in a new session when it is already running in another session.
PS: I have edited the title of the bug accordingly.
My previous assumption was not completely correct: it seems that nx is not the problem. In fact:
If I log out of the automatically opened session with vnc before I try to connect with nx, at-spi works fine in the nx session. Consequently, I now wonder whether the problem is not that at-spi does not start in a new session when it is already running in another session.
PS: I have edited the title of the bug accordingly.