Bug#640331: iceweasel 6.0 - huge ram use

[niky45]

Package: iceweasel
Version: 6.0-4
Severity: important

Dear Maintainer,

iceweasel (6.0) just eats almost all my 2 Gb of ram. i have tried the
previous 5.0, and everything works as expected (i mean, about ~400 Mb of
used ram, while 6.0 uses about 1.5 Gb and mora than 500 Mb of swap)

i'm attaching a screenshot of htop, and iceweasel with just 3 tabs (and no
flash running)

there it shows iceweasel's ram use: 1.3 Gb **without** buffers/cache,
and over 2.5 gb counting that, too much.

oh. i'm using some addons. but i'm using them too on iceweasel 5.0, and
it just don't use all my ram. 

-- Package-specific info:

-- Addons package information

-- System Information:
Debian Release: wheezy/sid
  APT prefers unstable
  APT policy: (990, 'unstable'), (650, 'testing'), (550, 'stable'), (500, 'oldstable'), (1, 'experimental')
Architecture: i386 (i686)

Kernel: Linux 3.0.0-1-686-pae (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages iceweasel depends on:
ii  debianutils         4.0.2     
ii  fontconfig          2.8.0-3   
ii  libc6               2.13-18   
ii  libgcc1             1:4.6.1-8 
ii  libgdk-pixbuf2.0-0  2.23.5-3  
ii  libglib2.0-0        2.28.6-1  
ii  libgtk2.0-0         2.24.5-4  
ii  libnspr4-0d         4.8.9-1   
ii  libstdc++6          4.6.1-8   
ii  procps              1:3.2.8-11
ii  xulrunner-6.0       6.0-4     

iceweasel recommends no packages.

Versions of packages iceweasel suggests:
pn  libgssapi-krb5-2           1.9.1+dfsg-2
pn  libkrb53                   1.9.1+dfsg-2
pn  mozplugger                 <none>      
pn  ttf-lyx | latex-xft-fonts  <none>      
pn  ttf-mathematica4.1         <none>      
pn  xfonts-mathml              <none>      

Versions of packages xulrunner-6.0 depends on:
ii  libasound2                1.0.24.1-3      
ii  libatk1.0-0               2.0.1-2         
ii  libbz2-1.0                1.0.5-6         
ii  libc6                     2.13-18         
ii  libcairo2                 1.10.2-6.1      
ii  libdbus-1-3               1.4.14-1        
ii  libevent-1.4-2            1.4.14b-stable-1
ii  libfontconfig1            2.8.0-3         
ii  libfreetype6              2.4.6-2         
ii  libgcc1                   1:4.6.1-8       
ii  libgdk-pixbuf2.0-0        2.23.5-3        
ii  libglib2.0-0              2.28.6-1        
ii  libgtk2.0-0               2.24.5-4        
ii  libhunspell-1.2-0         1.2.14-4        
ii  libjpeg8                  8c-2            
ii  libmozjs6d                6.0-4           
ii  libnspr4-0d               4.8.9-1         
ii  libnss3-1d                3.12.11-2       
ii  libpango1.0-0             1.28.4-3        
ii  libpixman-1-0             0.22.2-1        
ii  libreadline6              6.2-4           
ii  libsqlite3-0              3.7.7-2         
ii  libstartup-notification0  0.12-1          
ii  libstdc++6                4.6.1-8         
ii  libvpx0                   0.9.7.p1-1      
ii  libx11-6                  2:1.4.4-1       
ii  libxext6                  2:1.3.0-3       
ii  libxrender1               1:0.9.6-2       
ii  libxt6                    1:1.1.1-2       
ii  zlib1g                    1:1.2.3.4.dfsg-3

Versions of packages xulrunner-6.0 suggests:
ii  libcanberra0      0.28-1    
ii  libdbus-glib-1-2  0.94-4    
ii  libgconf2-4       2.32.4-1  
ii  libgnomeui-0      2.24.5-1  
ii  libgnomevfs2-0    1:2.24.4-1
ii  libnotify4        0.7.3-2   

-- no debconf information
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