Kristina - sometimes people in their excitement set a deadline that might be correct (trying to say it in a courteous manner, because I am guilty of it.
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It is very hard task to redo a system, the key thing is the quality of the end product.
Well working on designing or modifying hospital financial systems (real estate sites are very different) the design group (analysts) and programmers see things differently than the end user. As well as how the end user uses the tools within the system. Prior to 3.0 being released was there some client involvement for final observations (errr final debugging)? This is what I was trying to say.
IMHO - the page duplication issue is a reason for sites not performing well in the results - however it is much easier to point the finger at something other than ourselves. LOL