Safe to upgrade Perl in Sarge?

[Roel Schroeven <rschroev_nospam_ml@fastmail.fm>]

Hi,

There's a security upgrade for perl in sarge, but I'm not sure if it's 
safe to install it:

$ apt-listbugs list perl
Reading package fields... Done
Reading package status... Done
Retrieving bug reports... Done
grave bugs of perl (5.8.4-8 -> ) <open>
 #231082 - spamassassin: spamc hangs since most recent perl package 
updates for stable
 #283320 - perl FTBFS on mipsel/lasat, but not on mipsel/cobalt
Summary:
 perl(2 bugs)


We're using spamassassin via exiscan-acl. I don't know if that uses 
spamc, or has the same problem. I'd like to upgrade perl to the new 
version of course, but not if that breaks our spam filter.

Is it safe to upgrade? Alternatively, what's the best way to go back to 
the previous version of perl if I update it and find out that the new 
version breaks our spamfilter?

--
If I have been able to see further, it was only because I stood
on the shoulders of giants.  -- Isaac Newton

Roel Schroeven