urxvt crashes (segmentation fault)

[Andrej *]

I'm using gentoo and I have problem with rxvt-unicode.
When I list  (ls) some directories (with many files or directories
inside) I get segmentation fault (urxvt crashes). Same happens when I
want to scroll man pages. For example, urxvt crashes when I scroll
(with pagedown) man pages from iptables. And it also crashes when
doing pagedown scroll in nano with longer files (like xorg.conf).

I do not have this troubles with rxvt-unicode 5.3 (latest stable
version for gentoo), but I have it with versions 7.0 up.  And I also
don't have those problems with others terminals (xterm, aterm).

Anybode know what could be wrong?
I really like to use newer version with tabs support.

Regards
Andrej