May try updating the Windows OS and MS Office as a troubleshooting step if you have not already done it.
Windows 7 and Windows Server 2008 R2 Service Pack 1 (KB976932)
Service Pack 1 for Microsoft Office 2010 (KB2460049) 32-bit Edition
You don't mention the Service Packs on you Microsoft products.
You also did not indicate if you updated Acrobat. The early release of AA X did not work well, if at all, with the 64-bit systems. There appear to still be some problems reported, but Adobe had indicated some of the updates were supposed to fix the problem.
All systems are completely up to date. This is happening on dozens of Windows 7 64bit systems across half a dozen networks for as many clients. The only common thing is Windows 7 64bit, office 2010 32 bit and Acrobat X.
I am convinced that the problem is a QA one on adobe's part.
I've yet to see any update that states adobe has fixed the problem - i'd be very interested to see one that specifically states that they fixed PDF maker crashing the print spooler service on windows 7 64 bit.
I've worked around the issue by performing a change install of acrobat X and removing PDFmaker and all subitems.
I am having continuous problems of a similar nature. Starting just today, ALL of the PCs in my office are taking 15 to 20 minutes to create a simple pdf using acrobat x. Yesterday, everything was moving along quickly, but we 'updated'. What a joke.
We are all Windows 7 64 bit.
All I can suggest at this point is to search the knowledgebase for possible solutions.