Verizon Data connection problems

[Borg561]

Today I started having some issues with my data connection on Verizon. Frequently when synching my mail, weather, stocks, etc. or using ICS, it will ask for my username, password, and domain. These were all initially blank and everything had worked fine.

Having tethered with my old phone, I put in my#@vzw3g.com for the username and vzw for the password. This works. There are still problems though. This prompt keeps coming up (it didn't earlier in the week and it worked fine). Also, if I'm tethered, when browsing on my laptop I have to click a link 2-3 times or type a URL then immediately refresh once it tries to load, or else I'll end up getting a "page cannot be displayed" message. Browsing still works on the phone without any issues. Any ideas or is anyone else having this problem?

Justin