freezes while filling out login form to websites
I've been experiencing this for over a month now. Basically, occasionally when logging into a website (i.e. google, designers.mx, amazon, etc. -- really doesn't matter what site it seems), Lion will entirely freeze up for seconds to up to minutes. More specifically it occurs when tabbing from the username to the password field. This will happen both in Chrome and Firefox. I had thought it was related to maybe firefox add-ons (i.e. I have 1password, but i've disabled them and have had it still happen. I do use firebug, but wouldn't think it was related to this issue...
I've already verified there are no issues in the keychain access as well.
I can sometimes unfreeze momentarily it by pressing the power button briefly.
I'm also up-to-date on all my Lion updates.
Any help is most appreciated.
MacBook Pro, Mac OS X (10.7.3)