hehe - my first 'PC' was a BBC 'B' and had a massive 32kb of memory :D and I can still remember fiddling with the volume and tone controls on my tape deck to get a program to 'chain' correctly, watching the hex digits count up to around 31 and then watching it freeze and having to rewind the 15min tape to try again!!! :D
ah and they complain about spammers slowing our internet down this week :D:D:D
(and I bet there's many examples of others who go back further than that too :D)
On a more serious note though George - if you are hitting a max limit of 64kb on your feedback posts you may need to consider whether that's an appropriate way to be giving feedback and if your students will actually read it - it may be more appropriate to provide your feedback as an attached file if it is that big!
Richard