<hr>Do the errors usually occur during a given task or process? Seems to happen when printing to Adobe to create a PDF but not all of the time.<hr>That leads me to suspect a problem with the print driver used to create the PDF file. Print drivers are one of the most common causes of application crashes - check and see if there is a later version of the Adobe that is intended for use with Windows XP. Another alternative might be to try one of the other freeware or shareware products that can be used to create PDF documents and see if they cause problems. This of course is conjecture until testing confirms or denies, but sometimes hunches can be a good way of sorting out problems.