This definitely didn't happen for me (or, as far as I can tell from bug
report frequency, the vast majority of users?)
Nope - uswsusp is in universe, and is not the supported suspend method.
The reason given in the changelog is:
uswsusp (0.6~cvs20070618-1ubuntu2) gutsy; urgency=low
* Don't build s2ram. It's not sensible on Ubuntu.
-- Matthew Garrett < ... at srcf dot ucam.org> Mon, 20 Aug 2007 15:47:18 +0100
Unfortunately that doesn't explain much.
That seems like a reasonable option if it's practical.