Matthew uses Skype and says that the Chrome Helper Agent may also cause sync problems when using Skype video. So he dumped it for Firefox.
Josh wants to know if he should buy all one brand of hard drives for his QNAP NAS or if he could mix them. Leo says that there's no problem with mixing drives, but he should make sure that the drive size is consistent, as most RAIDs will manage according to the smallest size. If he's buying it all at once, then it makes sense to buy the same drive, but if he's getting a great deal on different hard drives, then by all means, he should save the money.
Dave wants to know if his old RAID hard drives can be read by his computer. Leo says it depends. If mirrored, maybe. They're identical. But maybe not. He shouldn't make any assumptions. Dave should copy the data off it and then he can take each of them and put them in their own enclosed drives, or use a new array like Synology. Synology also does a disk check periodically to keep it healthy. When he puts them in, they'll check the hard drives as they are building the raid.