Comment 20 for bug 1066445

TO DO: add to release notes, instructions for manually installing apt as a work around if this bug is encountered.

<cjwatson> Ah - well, it'll take me a bit longer to actually fix it, but I've tracked it down to excruciatingly unlucky timing of cache remapping in a function unequipped to handle it
<cjwatson> Unfortunately there may be a hard-to-resolve upgrade problem with old versions of apt; don't know what we can do about that short of (a) randomly permute size of cache by continuing normal development (b) SRU whatever fix we come up with
<cjwatson> And possibly (c) release-note instructions for manually installing new apt