Comment 4 for bug 484306

Bug confirmed.
apt-cache policy gcalctool
gcalctool:
  Installed: 5.28.1-0ubuntu1
  Candidate: 5.28.1-0ubuntu1
  Version table:
 *** 5.28.1-0ubuntu1 0
        500 http://mirror.optus.net karmic/main Packages
        100 /var/lib/dpkg/status

Updated from karmic-proposed
apt-cache policy gcalctool
gcalctool:
  Installed: 5.28.2-0ubuntu1
  Candidate: 5.28.2-0ubuntu1
  Version table:
 *** 5.28.2-0ubuntu1 0
        100 /var/lib/dpkg/status
     5.28.1-0ubuntu1 0
        500 http://mirror.optus.net karmic/main Packages

Performed test case as follows:
1. Open gcalctool
2. Check "show trailing zeroes" menu option is only sensitive in scientific mode
3. Change to scientific mode and enable show trailing zeroes
4. Change to other mode and confirm trailing zeroes are not shown (repeat for all other modes)

In all cases after updating to the SRU, the "show trailing zeros" was able to be changed. SRU verified as fixed.