gnus hangs when changing network

[hobbes@poukram.net (Rémi Letot)]

Hello,

when I change network with my laptop sleeping (typical when I commute
between work and home), my whole emacs session often freezes if gnus is
there (which is always).

Not so long ago I just had to kill the openssl process, which abruptly
interrupted the imap connection, and gave me back my emacs.

Now that ssl is handled by emacs itself, I have no process to kill. And
C-g doesn't help. And it can stay frozen quite some time.

Besides quitting gnus before I commute (which I almost always forget)
and killing emacs (which is "Not Good"), is there a way to stop this
from happening ? Shouldn't C-g always work ?

Thanks,
-- 
Rémi