Dear forum users,
I want to solve an issue of mine and possibly share some information.

My laptop is running Ubuntu from more than 1 year without many changes besides upgrades from 10.10 to 11.04 and then 11.10 and then downgraded to 10.10 by a fresh install and then agin to 11.04. Each time it took only a few minutes as every configuration for gnome and its applications are on a separate partition mounting the /home folder. So far so good, the only problem is that each time I up/downgraded the system, Gnome start took longer and longer as - I guess - there are a lot of old hidden files in /home retaining formation that is not needed anymore or even increase the starting time by booting unuseful stuff and so on.

The machine is not very recent but at the first Ubuntu install it was way faster. The boot time is ok, I also run several times bootchart and managed to gain some small extra time. The problem is when Gnome is started. I think there is a lot of trash that is not required anymore. I'm posting a list of my hidden folders in /home, maybe I can delete some of them right away that are not needed. Gnome is 2.31.1 (but the issue was there already with previous up/downgrades) and Ubuntu 11.04.

Code:
.
..
.AbiSuite
.adobe
.aFolder
.alsamodular
.aMule
.android
.appdata
.ardour2
.arduino
.ArobasMusic
.audacity-data
.autumn
.avm
.AwOkenrc
.bash_history
.bash_logout
.bashrc
.bazaar
.beast
.bserc
.byobu
.bzr.log
.cache
.chromium-bsu
.compiz
.compiz-1
.config
.crebs
.cups
.dbus
.desktopflickr
.dmrc
.dropbox
.dropbox-dist
.dropbox-dist-new
.dvdcss
.easystroke
.eclipse
.elements
.emerald
.esd_auth
.evolution
.face
.filezilla
.fontconfig
.fonts
.fretsonfire
.furiusisomount
.gconf
.gconfd
.gEDA
.gegl-0.0
.gervill
.gimp-2.6
.gksu.lock
.gnome2
.gnome2_private
.gnome-color-chooser
.gnupg
.gstreamer-0.10
.gtk-bookmarks
.gtkrc-2.0
.gtkrc-2.0-gnome-color-chooser
.gtkrc-2.0.save
.gvfs
.hgrc
.hplip
.hydrogen
.ICEauthority
.icedtea
.icedteaplugin
.icons
.idm
.jackbeat
.jackdrc
.jamin
.java
.kde
.kino-history
.kinorc
.launchy
.lesshst
.libreoffice
.local
.lyx
.lyxpipe.in
.lyxpipe.out
.macromedia
.matlab
.mc
.mhwaveedit
.mission-control
.moovida
.mozilla
.mplayer
.mtab.fuseiso
.musePrj
.nautilus
.netx
.ocrfeeder
.openoffice.org
.openshot
.orta
.patchagerc
.pdextended
.pki
.praat-dir
.printer-groups.xml
.processing
.profile
.pulse
.pulse.bak
.pulse-cookie
.python-eggs
.qt
.remmina
.rubberband.wisdom.d
.screenlets
.screenrc
.scribus
.shotwell
.Skype
.sooperlooper
.speech-dispatcher
.ssh
.subversion
.sudo_as_admin_successful
.supertux2
.synaptic
.teamviewer
.texmf-var
.themes
.thumbnails
.thunderbird
.torcs
.tortoisehg
.touchosc2pd
.tsclient
.tuxguitar-1.2
.tvplayer
.VirtualBox
.vkeybdmap
.vmware
.wally
.wine
.wine_backup
.wine_boh
.wine_ie6
.wine.old2
.wireshark
.x11vnc.log.lapleo:5900
.Xauthority
.xine
.xinput.d
.xscreensaver
.xscreensaver-getimage.cache
.xsession-errors
.xsession-errors.old