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Ok, so the Usertalk bug I posted last week was a little obscure, so far only Steve has even attempted to solve the problem.

Here's an example script you can excecute that demonstrates the problem:

on createAlphaTable () { // items A through J
    local (t);
    new (tableType, @t);
    for i = 1 to 10 { // create a table with n items
        t.[char(i+64)] = true}; // A is ascii 65
    return (t)};
local (t = createAlphaTable ());
for adrItem in @t {
    if adrItem^ == true {
        delete (adrItem)}}
dialog.alert ("Items in table: " + sizeOf (t))

The last line of the script tells us that their are still 5 items left in the table! The script should have deleted every item, because they were all set to true, why didn't it?

I will be posting a full explanation in the comments, so you have one final chance to solve it :)