Safari Pages won't load without restarting browser
I've noticed with my MacPro that after a few hours, I'm unable to load pages on Safari with Yosemite 10.10.2. The bar stalls about an inch across. The only way to resolve it that I've found it to reboot the computer. The connection problem seems to apply to Firefox as well. Is this a known issue?
mac book pro, Mac OS X (10.6.2), Newbie