.hg directory has eclipsed 3GB - how to deal with huge manifest?

[Matt Mackall]

On Tue, 2009-01-13 at 19:29 -0800, bughound wrote:
> As our project has progressed, so has the manifest (.hg directory).  
> 
> It's now over 3GB and causing anyone who wants to clone a new area a
> 20-minute wait while the .hg directory gets populated over our network.

That's unusual. Can you give us some statistics:

hg manifest | wc
hg log -qm | wc
hg id -n
hg heads -q | wc
hg branches | wc

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