Bug#987449: debian-installer: #987449 seems likely to share the cause with #987377

[Philip Hands <phil@hands.com>]

Package: debian-installer
Followup-For: Bug #987449

Dear Maintainer,

Having tested this with both the alpha2 and alpha3 netinst ISOs, I find that the
bug does not exist in alpha2 and does exist in alpha3, which is the same as
#987377.

Also, the lock-up points are visually similar, and in both cases some process
makes the CPU very busy, so I would guess they are actually both symptoms of the
same bug.

BTW Since the behaviour in _this_ bug is apparent within a few keystrokes of
starting d-i, this is the better one to use for testing.

Cheers, Phil.