Hello Andrey,
Please find attached the SMath file which caused crash on my WinXP(32) and the hang report. In order to try to reproduce this out the plugin
Non-Linear-Solvers should be used.
Regards,
Radovan
EDIT: Unfortunately, It crashes for me on Win7(64) as well
SOLVED by w3b5urf3r

When Sisyphus climbed to the top of a hill, they said: "Wrong boulder!"