I have to agree with Ian that I have never found this to be an issue. It is very
thorough and does scan continuously. It is the initial scan that takes a long
time time.

However, it may a reflection of the amount of RAM and processor that we have in
comparison to others. If Ian can run Vista, then he probably has a new and fast
machine. Mine isn't that new, but it has lots of horsepower for what I do with
it. Alexandru likes to run bare bones systems and to get optimal performance.
This could account for our different perceptions of Picasa.