Completion is extremely slow here

[Helmut Jarausch <jarausch@xxxxxxxxxxxxxxxxxxx>]

Hi,

I'm using zsh for many many years now. But I'm lazy.
I'm using the GIT version which I update nearly once a week.
But I haven't updated my .zsh* files and my zsh-completion(s)
are somewhat old (in GenToo versioning: zsh-completion-20091203-r1
and zsh-completions-0.7.0)

Sometimes (only), in a freshly opened xterm, when I enter
./hg<Tab>

it takes up to 20 seconds to complete though there is only a single
executable starting with 'hg' in that directory.
And my PATH is not too complicated
.:/home/jarausch/bin:/usr/local/bin:/usr/bin:/bin:/opt/bin:/usr/x86_64-pc-linux-gnu/gcc-bin/4.6.3:/usr/lib64/opencascade-6.5/ros/lin/bin:/usr/games/bin:/usr/brlcad/bin:/opt/ekopath/bin

The path /usr/games/bin doesn't exist and I don't know where it comes  
from.
I've checked  /etc/zsh/* /etc/profile and $HOME/.z*

What am I missing?

Many thanks for a hint,
Helmut.