Look out when using Western Digital tools. Most are for IDE only and wont work with SATA, even with their newer ones. Most likely wont cause a problem but WD doesn't identify them clearly. Will probably just waste someones time if they have a SATA drive and try to use the WD tools.
Moving the page file to another partition on the same drive doesn't help anything. It even may be slower since the heads have to traverse all the way to the new partition in order to read and write the page file. Leave it on your boot drive unless you get a separate physical drive, preferably one not hooked to the same cable as your current drive.
When you move your pagefile it really doesn’t matter if it is a physical partition or logical. However, I have found that the supposed performance gain is minimal compared to increasing RAM. One trick you can do with partitions is to increase the block size for a partition that is storing large files such as Photos or Music. The Larger the block, the less the system needs to access to reassemble the file. As for the problem at hand here, sounds like a most likely is going to turn out to be failing hardware, however Check-disk and turning off delayed write may “cure” it for a while. I recently bought a 7200 rpm 160Gb dive for less than $40. Installed it on a 1GB Athlon System and I swear its faster than my 2.8 Celeron system. RAM and FAST Cheap drives can work near miracles.