Just a quick update
We disabled Antivirus and Antispam and still had the issue
Tried this Go to Edit / preferences / general - the uncheck box "Enable protected mode at startup" This got rid of the lag in opening adobe docs.
Still no good
tried this Open the reader, select Edit, Preferences then select Internet from the Categories. This should display the Web browser options page, untick "Allow speculative downloading in the background". This increased the speed of opening pdfs for me hope it helps.
Still have the issue
The only thing we have found now is if we open Adobe reader first and open all other pdf from the open menu its is fine and fast, we get the issue when we douible click the PDF to open it
I have Adobe Reader 10.1 on Windows 7 64-bit, and it takes about 2~3 seconds to open Adobe Reader when double-clicking on a PDF file.
That is a bit longer than other programs, but I can live with that.
Yet some other programs do take a lot longer (10+ secs), like Microsoft SQL Server or Microsoft Visual Studio. But since I start them usually just once a day, I can live with that as well.
We heard that adobe reader has got major security lope hole , which was found by mcafee antivirus, We would like to know is it true ?