Question Graphic-bug in some browsers?

I get this fenomen in some browsers (IE and Chrome) but in firefox it looks fine!

Something wrong with the templet?

Database collation check: The collation of your table fields are correct

Legacy mode: Disabled | Joomla! SEF: Enabled | Joomla! SEF rewrite: Enabled | FTP layer: Disabled |

This message contains confidential information

htaccess: Exists | PHP environment: Max execution time: 240 seconds | Max execution memory: 128M | Max file upload: 96M

Joomla default template details : Fluxio3 | author: Ronnie Lidström | version: 1.0 | creationdate: 2011-01-18

Kunena default template details : Blue Eagle (default) | author: Kunena Team | version: 1.6.2 | creationdate: 2010-12-29

Kunena version detailled: Installed version: 1.6.2 | Build: 3894 | Version name: Team | Kunena detailled configuration:

Warning: Spoiler!

[th]Kunena config settings:[/th]

board_title
board_offline	0
board_ofset	0.00
offline_message	<h2>Forumet är offline för uppdateringar/service.</h2> <div>Återkom om en stund!</div>
enablerss	1
enablepdf	1
threads_per_page	20
messages_per_page	20
messages_per_page_search	15
showhistory	1
historylimit	6
shownew	1
jmambot	1
disemoticons	0
template	default
showannouncement	1
avataroncat	0
catimagepath	category_images/
showchildcaticon	1
annmodid	62,63
rtewidth	450
rteheight	300
enableforumjump	1
reportmsg	1
username	0
askemail	1
showemail	0
showuserstats	1
showkarma	1
useredit	1
useredittime	0
useredittimegrace	600
editmarkup	1
allowsubscriptions	1
subscriptionschecked	0
allowfavorites	1
maxsubject	80
maxsig	300
regonly	0
changename	0
pubwrite	0
floodprotection	0
mailmod	0
mailadmin	0
captcha	0
mailfull	0
allowavatar	1
allowavatarupload	1
allowavatargallery	0
avatarquality	65
avatarsize	1024
allowimageupload	0
allowimageregupload	1
imageheight	500
imagewidth	800
imagesize	150
allowfileupload	0
allowfileregupload	1
filetypes	txt,rtf,pdf,zip,tar.gz,tgz,tar.bz2
filesize	120
showranking	1
rankimages	1
avatar_src	fb
fb_profile	fb
pm_component	no
userlist_rows	30
userlist_online	1
userlist_avatar	1
userlist_name	1
userlist_username	1
userlist_posts	1
userlist_karma	1
userlist_email	0
userlist_usertype	1
userlist_joindate	1
userlist_lastvisitdate	1
userlist_userhits	1
latestcategory	26
showstats	1
showwhoisonline	1
showgenstats	1
showpopuserstats	1
popusercount	5
showpopsubjectstats	1
popsubjectcount	5
usernamechange	0
rules_infb	1
rules_cid	5
help_infb	1
help_cid	4
showspoilertag	1
showvideotag	1
showebaytag	0
trimlongurls	1
trimlongurlsfront	40
trimlongurlsback	20
autoembedyoutube	1
autoembedebay	0
ebaylanguagecode	en-us
fbsessiontimeout	1800
highlightcode	0
rss_type	topic
rss_timelimit	month
rss_limit	100
rss_included_categories
rss_excluded_categories
rss_specification	rss2.0
rss_allow_html	1
rss_author_format	name
rss_author_in_title	1
rss_word_count	0
rss_old_titles	1
rss_cache	900
fbdefaultpage	recent
default_sort	asc
alphauserpointsnumchars	5
sef	1
sefcats	1
sefutf8	0
showimgforguest	1
showfileforguest	0
pollnboptions	10
pollallowvoteone	1
pollenabled	1
poppollscount	5
showpoppollstats	1
polltimebtvotes	00:15:00
pollnbvotesbyuser	100
pollresultsuserslist	1
maxpersotext	50
ordering_system	replyid
post_dateformat	datetime_today
post_dateformat_hover	datetime
hide_ip	1
js_actstr_integration	0
imagetypes	jpg,jpeg,gif,png
checkmimetypes	1
imagemimetypes	image/jpeg,image/jpg,image/gif,image/png
imagequality	40
thumbheight	32
thumbwidth	32
hideuserprofileinfo	put_empty
integration_access	auto
integration_login	auto
integration_avatar	auto
integration_profile	auto
integration_private	auto
integration_activity	auto
boxghostmessage	0
userdeletetmessage	1
latestcategory_in	0
topicicons	0
onlineusers	1
debug	0
catsautosubscribed	0
showbannedreason	0
version_check	1
showthankyou	1
showpopthankyoustats	1
popthankscount	5
mod_see_deleted	1
bbcode_img_secure	text
listcat_show_moderators	1
lightbox	1
activity_limit	0
show_list_time	720
show_session_type	0
show_session_starttime	0
userlist_allowed	0

Third-party components: AlphaUserPoints: Disabled or not installed | CommunityBuilder: Disabled or not installed | Jomsocial: Disabled or not installed | UddeIm: Installed (Version : 2.2)

Third-party SEF components: sh404sef: Disabled or not installed | ARTIO JoomSEF: Disabled or not installed | AceSEF: Disabled or not installed

Plugins: System - Mootools12: Disabled | System - Mootools Upgrade: Disabled | JFirePHP: Disabled or not installed | Kunena Discuss: Disabled or not installed | Kunena Search: Disabled or not installed | My Kunena Forum Menu: Disabled or not installed | My Kunena Forum Posts: Disabled or not installed

Modules: Kunena Latest: Enabled (Version : 1.6.2) | Kunena Stats: Disabled or not installed | Kunena Login: Disabled or not installed

Looks like template issue. Most new browsers have buildin "Inspect Element" feature (in FireFox you need to install FireBug plugin), which allows you to look at the CSS rule stack for the current element. It's really a great tool to track down issues like this.

Looks like an issue with RocketTheme's Gantry frame work. If your using RT theme try turning off smartload for images on your forum page.

I am using default kunena templet (Blue Eagle). But I am using an own templet in Joomla. Problem was solved after I changed font-size one size in joomla-templete.