My inDesign has just recently started coming up with an OUT OF MEMORY error almost every time I export to a .pdf. I have not installed any new applications in the last 6 months. My acrobat has been working weird as well, has any one got any ideas as to how to alleviate this issue?
Have you tried this? In Acrobat, under the Help menu, you can click on Repair Acrobat Installation.
Also, if Windows, have you emptied the Temp folder lately? I like CCleaner free utility for that purpose.
Maybe after that you could try to trash your InDesign preferences and maybe reboot just for good measure.
How much RAM is on your system?