Adobe Reader CPU Usage

Hello All,
The problem i'm having is that "acroread" process after being open for some time (many hours or even days) starts to use all the CPU without anyone touch the application. This causes lots of trouble because i'm using all the time simulation software and "acroread" starts to share CPU with my mission critical applications and I cannot be always checking if acroread has crashed.
I've tried with more than one Linux distribution and have read in some web forums that other linux distributions have the same problem.
Currently i'm using CentOS 4.4 (Linux 2.6.9-34.0.2.ELsmp #1 SMP Fri Jul 7 19:52:49 CDT 2006 i686 i686 i386 GNU/Linux)
Even in CentOS 4.3 , 4.2 , 3.4 they all had the same problem.
I'm using acroread 7.0.8 but older versions of 7.x did the same.
Please share some ideas about this issue.
Thanks

Not sure whether this is the same problem or a different one.
For us acroread consumes all the memory and the CPU is maxed out swapping
until the oom manager kills acroread and the machine recov
Our machines are 2GB RAM with 2GB swap, running the x86_64 version of
Scientific Linux 5.3 (a recompilation of Red Hat Enterprise Linux 5.3)
- we don't really need a 64bit OS but some local apps run faster in 64 bit.
We first saw this with, I think, acroread 8.1.4 and continues through to 8.1.6.
(I am reluctant to switch to v9 since we are using it as a pdf viewer
not a flash viewer - adding javascript was bad enough - we would be
more likely to move to evince or another open source pdf viewer).
Typically acroread chews memory for users who run firefox 32bit
and the nppdf.so Adobe plugin, but I cannot confirm that it never
happens for users whose firefox opens a separate acroread process.
What extra imformation would help to debug this ?
Thanks,

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