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最新バージョンの1.4.0がでてます。
e2fsprogsをほとんど削除したり、syslogdを書き直したりと、多くの修正が入ってます。

• e2fsprogs are mostly removed from busybox. Some smaller parts remain, the rest of it sits disabled in e2fsprogs/old_e2fsprogs/*, because it's too bloated. Really. I'm afraid it's about the only way we can ever get e2fsprogs cleaned up.
• less: many improvements. Now can display binary files (although I expect it to have trouble with displays where 8bit chars don't have 1-to-1 char/glyph relationship). Regexp search is not buggy anymore. Less does not read entire input up-front. Reads input as it appears (yay!). Works rather nice as man pager. I recommend it for general use now.
• IPv6: generic support is in place, many networking applets are upgraded to be IPv6 capable. Probably some work remains, but it is already much better than what we had previously.
• arp: new applet (thanks to Eric Spakman).
• fakeidentd: non-forking standalone server part was taking ~90% of the applet. Factored it out (in fact, rewrote it).
• syslogd: mostly rewritten.
• decompress_unzip, gzip: sanitized a bit.
• sed: better hadling of NULs
• httpd: stop adding our own "Content-type:" to CGI output
• chown: user.grp works again.
• minor bugfixes to: passwd, date, tftp, start_stop_daemon, tar, ps, ifupdown, time, su, stty, awk, ping[6], sort,...

追記：すでに修正パッチがいくつか出てます。