There is a little bug in pgAdmin III 1.8.2 on Windows XP (at least).
If one creates a new column with comments by opening the properties of an existing table, then going to Columns tab and clicking the Add button, the comments will NOT be saved. However, by adding a column directly (e.g. right click on the table from the object browser, "Add an Object ==> Add a column ..."), the comments WILL be saved.
And if the column already exists and we add a comment to the existing column, either directly (right-clik on the column) or via the column tab of the table window, the comments will be saved.
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