"secure connection failed" error msg- about every 3rd mouse click

new to forums and not sure if i'm in the right forum. it could be a malware issue but then again it could just be a software conflict issue. do i need to be in the malware forum or the software ?
in firefox i just started getting all these security certificate issues (see attachments) . one is my email at google, another is yahoo, another says "this connection is untrusted" - for heavens sakes, this one is mozilla. if these aren't trusted sites, none aare. is this a browser problem ?

whenever i try to use IE - upon opening the browser, i get a pop up window at the bottom telling me the Ask Toolbar has been successfully installed and it ask me to click "enable" to complete the installaation. i don't want the Ask Toolbar so i click "don't enable" and i get a new window (Ask.com) with the same pop-ups asking me to click enable. if i go to my home page (google) these to Ask Toolbar windows ar there also- asking me to click "enable.
i'm also aware of the Geek malware removal instructions but didn't see anything there specifically relavent to my issue.

would app any help
rogerdc

 

i goofed with the attachments- will try again

 

many tks 4 reply - i did check the clock/calendar - it was showing 3 05 am on 5/22/2009. i set the clock to synchronize with " time.windows.com but haven't had a chance to use it long enough to determine if this will stop the security certificate issue.

tks again for help
rogerdc