Firefox and any web browser is slow slow - after last update

after last update of my suse 10.3
all web browsers start to work slooooow
to make me crazy - 1-2 min for page
in my connection i see 1 second working
connection, and after this “eth1” its not
traing to conect. after 1-2 min, page is displayed.
in firefox in error console i see a long list of
mesages as :

Warning: Selector expected. Ruleset ignored due to bad selector.
Source File: http://www.gigabyte.com.tw/style.css
Line: 145

Warning: Error in parsing value for property ‘display’. Declaration dropped.
Source File: Технологии | U60 UMPC – полезен и удобен джобен компютър - Dnevnik.bg](http://www.dnevnik.bg/tehnologii/2007/10/08/384410_u60_umpc_polezen_i_udoben_djoben_kompjutur/)
Line: 0

Warning: Unknown property ‘_margin-bottom’. Declaration dropped.
Source File: http://login.economedia.bg/lib/tickbox.css
Line: 163

Warning: Error in parsing value for property ‘height’. Declaration dropped.
Source File: http://login.economedia.bg/lib/tickbox.css
Line: 155

??? whi ???