Firefox 4 is incompatible with trend micro security system!!
Firefox 4 will not let the trend micro toolbar be activated. This toolbar is an integral part of the trend micro safety system. I have to use firefox 3.6.16 until firefox comes up with a version that is compatible with the trend micro security system.
Wšě wotmołwy (3)
The update for the Trend Micro Toolbar will be issued on the second week of JUNE 2011. How do I know this? http://esupport.trendmicro.com/solution/en-US/1058585.aspx%EF%BB%BF Says so there. Want more info? http://community.trendmicro.com/t5/Home-and-Home-Office-Forum/UPDATE-Toolbar-For-Mozilla-Firefox-4-0/td-p/32014/page/4 Hope this helps, because I am one of the people as well with Firefox 4 and no Toolbar.
http://esupport.trendmicro.com/solution/en-US/1058585.aspx%EF%BB%BF This link now has a update hot fix and its makes the trend micro toolbar for firefox 4.0.1 work, I can now confirm this and please spread this news around for people who don't know. Look at the attached images as proof.
At least Trend Micro got the hotfix for Firefox 4 completed before Firefox 5 was released. Maybe in another 3 to 3 1/2 weeks you Trend Micro users can go thru this all over again when Firefox 5 is released.