Computer crashes are not unique to the person, but may be unique to the event. It is possible that the link that takes you to the comment portion of a hub has something in it, or a firewall is getting in the way, or there is a problem with your hard drive (not a likely cause--but possible). My suggestion is to shut everything down for several minutes including the modem or router through which your internet signal comes--bad packets, code, whatever, can get caught in those things as well. Restart and then restart your browser. Hubpages was designed around Firefox. So if you are using that, make sure you have the latest version.
Try it again. If that does not work, I would try defraging your hard drive--can take some time, depending on the size of your drive.
After that I am out of easy suggestions. My last option would be to shut your computer down for the night and hope everything works better tomorrow. It has happened to me.
By the way I use fFireFox with Google on an eight year old Dell with Windows 7. If you made any changes recently or if any updates were installed, you can restore to an earlier restore point and see if that solves the problem.