Date of creation problem after making Bridge create TIFs with PS Image Processor.

Question

I went through about 100 files and did what I wanted in Camera RAW (started out with NEFs). Thereafter I had Bridge make TIFs of all the files in the folder using the PS Image Processor.
Now, looking at the TIF folder in Bridge, I find that about 80 of them has a wrong creation date (I checked the Preferences and I have asked for the date of creation - and not the date of modification). As I watch (several minutes) Bridge changes some of the dates to the ones known to me to be correct - but not all. If I close Bridge, restart Bridge and open the folder again the same happens, i.e. it starts all over. Even stranger is that the Windows Pathfinder have problems with the same files - i.e. does not show the date of creation at all.
The date of these 80 files are all the same - and they have been edited over several days!
I have done a lot of work on those files and would hate to start all over. I checked and of course the dates are the original in the RAW folder that I started out with.
I am sure that I do not have any bugs in my PC.
Can I remedy this i any way? I hate to have wrong dates on my files.
What can I have done to cause this? Can anyone help me? Thanking You in advance.
Git

Answer 1

Thank You again.
Yes, I have also purged the cache. More than once and again this morning. It does not change the result. Bridge still goes from the date January 13th 2013 to the correct date of creation when I look at the separate thumbnails - and back again when I scroll down the page and subsequently scroll up again!
Thus it seems that Bridge knows the date that the camera set but somehow this foolish January date keeps coming back.
All the folders with NEFs have correct dates - also the ones where I have imported the files from camera to pc in 2013! Only my TIFFs have this problem.
Rigth now I am having Norton 360 run a complete system scan. When that is done I will inactivate Norton (I know that I cannot have 2 antivirus softwares and firewalls run simultaneously on the PC) and instead run a complete scan with Lavasoft Adaware Pro. I have also used Norton Utilities and found no problems. Plus Malwarebytes Antimalware and Superantispyware. No problems.
If "date file created" is the date that the file was modified, it would not help me much. I often go back to a file and play with it again and if I have understood correctly, then this date would change again. I want to see the date of capture ("date created"). Also, by now the problem afflicts at least 1000 files. It would be impossible to do single file manual corrections of dates on so many files.
Update: While I have been writing this, an opened folder with only 36 files has changed the dates to the correct date of capture. I could also scroll up and down without the dates changíng in this small folder. But when I closed Bridge, restarted it and looked at the folder again Bridge again did need minutes to get all the dates rigth. Maybe I have a pc capacity problem instead of a software problem? But why on earth would this specific wrong date result from a too weak pc.?
Maybe I should just give up and reinstall PS?
Sorry if I trouble You with a ridiculous problem.
Git