2) Try apt (http://linux01.gwdg.de/apt4rpm/)
apt is a program to install, update query and remove rpm packages. Unlike the bare rpm program, apt will try to resolve any dependencies a package may have and suggest the right ones to be installed along the target package.
After installing apt you can type something like that:
gold:~ # apt search seamonkey
seamonkey - The OpenSource version of the Netscape browser
seamonkey-calendar - Mozilla's calendar implementation
seamonkey-debuginfo - Debug information for package seamonkey
seamonkey-dom-inspector - Mozilla's DOM inspector
seamonkey-irc - IRC for Mozilla
seamonkey-mail - Mozilla's Mailclient
seamonkey-spellchecker - Spellchecker for Mozilla
gold:~ # apt install seamonkey
Reading Package Lists... Done
Building Dependency Tree... Done
The following NEW packages will be installed:
0 upgraded, 1 newly installed, 0 removed and 192 not upgraded.
Need to get 9437kB of archives.
After unpacking 30.6MB of additional disk space will be used.
SuSE/10.0-i386/suse-projects seamonkey 0.99-0 [9437kB]
3) Use the rpm's query list option:
gold:~ # rpm -ql mldonkey
To uninstall packages, "rpm -ev mldonkey firefox opera", will uninstall several at once.
4) logout the graphical desktop, and login in text mode (CTRL-ALT-F2). Try to remove the directories ~/.gnome2 and ~/.gnome2_private (~ is a notation which means your home directory path)
$ rm -rf .gnome2 .gnome2_private
And try to log in using gnome as window manager again. Theses directories will be rebuild from scratch, hopefully removing any trash causing the bug you described.
5) Is quite the same for KDE. In this case, removing .kde directory. Attention, doing this you will lost all e-mails downloaded to your machine, all settings used by the window manager and its programs. Be carefull. Renaming .kde to .kde-old is more safe (mv .kde .kde-old).
I hope you like your new system !