If you can get on to surface web sites through Tor, but get timeout problems visiting .onion sites, check your system clocks time.The latest version of Tor tightened up the allowed clock skew, and if your clock is out by more than a few minutes from the Tor directory servers, they may not forward you the descriptors required to make a connection. This is a feature, not a bug, to prevent replay attacks, which are gaining in volume on Tor.As always, when experiencing problems with Tor, fire up the vidalia control panel and click on 'Message Log' and check for any warnings it may contain. If you have a yellow high-lighted warning saying your clock disagrees with the directory server by xx minutes and xx seconds, then you will have a hard, if not impossible, time connecting to .onion sites.A lot of relays are down the last two days due to the same problem, with the change from Daylight Savings Time in Europe this weekend, lots of relays are frozen because their clocks aren't set to the proper time. A restart of the relay usually fixes this.This is a problem every year around DST changes, and this year is no exception.