Lightroom 1.4.1 Old thumbnails appear when importing new photos

Question

I have recently been having a wierd issue with Lightroom 1.4.1 that on an initial scan of the forums have not found answered (apologies if this is has appeared before)
When importing a new batch of photos, the initial preview thumbnails display old images that already exist in my library.
These preview images sometime change quickly to the fresh imported image but when I import a large volume of RAW files the old images sometimes take a long time to change to the new ones, and sometimes require me to open each photo individually in order to update the thumbs which is slow and laborious.
I'm assuming that the numbers of my new images may be the same as existing ones and that's where the confusion arises.
Any help would be much appreciated.
cheers
Olly

Answer 1

The problem could be another program that's indexing your files.
Try installing Process Explorer (or the command line "Handle" program), both from Microsoft/SysInternals, and see if there's a process other than Lightroom that has the file open.
http://technet.microsoft.com/en-us/sysinternals/bb896653.aspx
http://technet.microsoft.com/en-us/sysinternals/bb896655.aspx
-- jd