Cannot open files while printing

Question

Does anyone know of a reason why when printing a large pdf (say around 100+ pages) i cannot open another file in the same program? The only way i have found around this is to: open one file to be printed in Reader then once the printing process has begun open another document via Open With and select Acrobat.
This is slightly more productive than only being able to open one document at a time but only slightly. NOTE* If i open, say 5 documents before i try to print then choose one to print the printing dialog box will appear in each document i have opened; at this point i still cant do anything witht the opened documents but at least i can read them.
This is really a major hiccup in my daily activites, what other options do i have and is there any way to open a PDF while printing another large one.
**PLEASE NOTE** There is never an error message that comes up when i try to open a PDF while printing, simply put nothing happens until printing finishes then all of the files will open at once. I had a reccomendation to make sure it wasnt a system resources issue, which I can safely say it is not.
Your help and observations would be greatly appricated.

Answer 1

I am still having this really strange problem, anyone have any suggestions? **NOTE** I did try using a different comp to rule out hardware problems, the same thing happens, while printing when you try to open a document nothing happens at all until printing finishes then all of a sudden all the files you tried to open while printing open up all at once. Is there some setting or restriction i dont know about that is forcing me into this? I am printing 100+ pages of paper size Arch D (36X42) so having to wait to do any work on pfd's while this massive print job is going on really sucks. Also the printers are network printers to the information being sent to the printer is off the computer really quickly, so i dont think it has something to do with being lagged out or anything.
Really any help at all would be great!