* Bobby wrote in grml's BTS on 20110509 / 21:27:

> I actually thought the same thing when I first started looking at this (in 
> regards to the version)! Exec zsh does the same thing.  I haven't tried removing 
> all aliases yet (and will), but I wanted to show you what I found in the 
> debugger because after I said I wasn't running into any infinite loops I think I 
> may have run into one.

[...]

I just tried to verify the problem on my own and definitely run into
an infinite loop which is debuggable in gdb.

AFAICT the problem is that Ubuntu took Debian's 4.3.11-3 version,
applied their own stuff and uploaded as 4.3.11-4ubuntu2.is.3ubuntu1
whereas Debian's zsh 4.3.11-4/4.3.11-5 includes bugfixes that are
supposed to address this issue. So this should be reported to Ubuntu
(and the developers should be asked why they are breaking version
numbers, sigh).

regards,
-mika-