LR 2.5 on Windows 7 crashing randomly - why?

Question

I don't know if this has come up before or not. I did a search and didn't find anything on it.
I have LR 2.5 installed on a Windows 7 Ultimate machine and have been experiencing random crashes of LR. I've been trying to isolate particulars to the issue, but it seems to be totally random. The latest crash occurred when editing an image in CS3. The image was opened in LR and clicked on "Edit image is CS3". I had been working on the image for some time without returning to LR, when I received a message indicating LR stopped working. Reopening LR seems to be ok until the next random crash. Other crashes have occurred upon returning to LR from CS3, and yet others occur if I leave CS3 open and return to LR to look at an image. I have also experience a crash in LR when LR was the only application open. I just clicked on a thumbnail image and was moving the mouse up to click on "Develop" when LR crashed.
I did not have these issues when using LR 2.4.
Has anyone else experience anything similar to this? If so, is there a work around or a fix?
Thanks.

Answer 1

Ok, I have looked at the event log and found two errors occurring with Lightroom. The first error seems to be coming from pen_tablet.dll and the second error comes from ntdll.dll. I would assume from this that there is a possible incompatibility with my pen tablet which is a wacom graphite 3.
Here is the first error:
Faulting application name: lightroom.exe, version: 2.5.0.1, time stamp: 0x4a9ff23b
Faulting module name: Pen_Tablet.dll, version: 5.2.0.7, time stamp: 0x4aa6d1ff
Exception code: 0xc0000005
And here is the second:
Faulting application name: lightroom.exe, version: 2.5.0.1, time stamp: 0x4a9ff23b
Faulting module name: ntdll.dll, version: 6.1.7600.16385, time stamp: 0x4a5bdadb
Exception code: 0xc0150010
I have checked and all drivers are up to date for both Windows 7 and Wacom and all other hardware I have.
Any ideas?