Something must've changed over the weekend because now when you select the "Show Deleted Files" option from the web restore, it will correctly count all the files, but the filesize remain the same regardless of checkbox. Would it be possible for an enhancement, to show Filesize of the current snapshot as well as a separate filesize of deleted files?
This brings up another point. Show deleted will show everything deleted within 30 days. Is it feasible to specify selection dates of how far back we can set for deleted files?
I did verify your report about the file size. There are a couple of bugs in the current version, however, a new version of this interface will be released shortly. They've made significant changes both visible and in the back ground. They may have already addressed your issue.
As to your other question, Mozy policy is to provide a history of 30 days of versions for each file backed up.
Restoration of a file to a version beyond 30 days is not possible.
There has been talk about adding the ability to extend the history window to longer than 30 days (for an extra fee) but this will not be added in the near future. I don't have a ETA for that yet.