Acrobat Pro 8.2.5 + Excel 2007 Intermittent Problem

Question

Acrobat Pro 8.2.5 (fully updated) + MS Excel 2007 (fully updated) + WinXP Pro (fully updated)
Excel document has several worksheets, one of which I convert to PDF weekly to put on an internal web link
I use the Excel toolbar icon Acrobat added to Excel, clicking Acrobat-Create PDF, to start the process
I always accept the default location, since I delete the local file after uploading to the server... therefore I never have to tell Acrobat it is OK to replace the file
About 1/2 the time, when I select the individual worksheet and tell Acrobat to convert to  PDF, it asks me for a file name and then actually creates that file
The rest of the time, it asks me for the file name and goes through the process, but does NOT create the file... so I have to start over and let Acrobat do the work again... I have never had the process fail twice in a row
This is a company computer so I may not replace Acrobat Pro 8x
Is there anything else I may do?

Answer 1

A week or so after Microsoft's latest "Patch Tuesday" I went to create my usual PDF 
Clicked on the toolbar option and got to the point of entering the file name, when Excel locked 
Nothing I did could get Excel to work, so had to close it with Task Manager 
When I went back to Excel to create the PDF, the option was gone from the toolbar 
I was tired of messing around with this, so now I just use the File--Print--Adobe PDF process 
This works every time, and is actually faster than before with the toolbar option 
As long as I can create my weekly PDF I don't really care HOW it's done, just that it works