Why does this appear?

[Europe]

Why does this type of text appears?
[slide]http://lulzimg.com/i14/5a93e3.bmp[/slide] instead of normal?
it appears in my WP-Admin as well.
is there something wrong with my pc? how can i fix it?

 

[SaKIB]

may be due to some plugin installation problem.

 

[Europe]

i cannot understand, if i visit the site from a different PC the text its ok.

 

[VPSWebServer]

I can suggest for new browser, or change monitor, resolution of your desktop. Try.