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Re: Mathematica 8 + OS X + McAfee = trouble; help?

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  • Subject: [mg124600] Re: Mathematica 8 + OS X + McAfee = trouble; help?
  • From: Murray Eisenberg <murray at>
  • Date: Thu, 26 Jan 2012 03:26:27 -0500 (EST)
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  • References: <jfm05k$jt3$> <>
  • Reply-to: murray at

OK, tracking down and excluding the Java run-time jar may help.

But on OS X, there seems to be no file named rt.jar. The closest 
candidate I've found is:


However, excluding that from the McAfee on-access scan does not cure the 

I'll investigate further.

On 1/25/12 7:05 AM, Oleksandr Rasputinov wrote:
> On Tue, 24 Jan 2012 10:12:04 -0000, Murray Eisenberg
> <murray at>  wrote:
>> Under Mac OS X 10.6.8 (Snow Leopard) I've been having persistent
>> troubles getting the Mathematica 8.0.4 front end to connect with the
>> kernel when I start the program, and to start the PacletManager, too.
>> Evidently, the problem is caused by JLink not starting or running
>> properly.
>> After substantial direct help from Wolfram tech support, we've traced
>> the problem to McAfee Security, specifically, Version 1.1.0 (1309), with
>> its anti-malware version 9.1.0 (4478), engine version 5400.1158.
>> Has anybody else encountered this?
>> What happens is that with normal on-access scan enabled, the JLink
>> problem occurs; with on-access scan disabled, the problem disappears.
>> I'd like to be able to keep McAfee Security and simply specify the
>> needed file exclusions from on-access scan. We've tried to exclude the
>> entire package (i.e., $InstallationDirectory) as well as
>> /Library/Mathematica (i.e., $BaseDirectory), and even the entire
>> $UserBaseDirectory. But that doesn't do the trick.
>> Perhaps the exclusions need to include specific files in those
>> directories, or even some Java files/directories. The Mac in question
>> has the usual Apple 64- and 32-bit Javas, version 1.6.0_29-b11-402.
>> Any suggestions?
> A while ago I encountered a similar problem (probably the same, in fact).
> McAfee's software seems to have a problem with scanning the large .jar
> files needed by the Java runtime, which of course is needed for the
> Mathematica front end. Specifically, McAfee takes a very long time (with
> certain definition versions) to scan rt.jar (of certain versions of Java)
> and eventually gives up, but in the mean time J/Link times out. I'm not
> very familiar with Macs or how the Mathematica installation is laid out on
> that platform, but I would think you can use an exclusion for rt.jar,
> wherever that may reside. Actually, to be frank, I always found McAfee to
> be extremely slow in general and to use an unjustifiably large amount of
> memory, which caused me some difficulty in using Mathematica even without
> the added annoyance of this particular problem. As there are many other
> anti-virus programs available and pretty much every one of them (except
> Norton/Symantec) is better in every respect than McAfee, I'd certainly
> encourage you not to rule out that solution.

Murray Eisenberg                     murray at
Mathematics & Statistics Dept.
Lederle Graduate Research Tower      phone 413 549-1020 (H)
University of Massachusetts                413 545-2859 (W)
710 North Pleasant Street            fax   413 545-1801
Amherst, MA 01003-9305

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