Based on some advice in this thread, I decided to try upgrading a few non-critical packages to see how it would go. After getting a few things upgraded without a hitch, I decided to give samba a try. It broke. After downgrading samba (also easy) so it would keep working, I looked for the problem in the mailing list archives and found that a kernel upgrade should fix it.
My real question is: To upgrade from slink to potato, should I go to a 2.2 kernel under slink first? I know those issues are documented on the Debian site. If so, what kernel version is most likely to prevent further problems like this? -- Mark Zimmerman