Hi guys,
it seems that MtGox has switch to Cloudflare (cloud anti-DDOS and content distribution network) which caused gadget to fail retrieving exchange rates temporarily (for an hour or so). The problems with BTCGuild are also caused by Cloudflare, and in the near future there might be problems retrieving exchange rates from MtGox, so I'm watching closely.
In any case, please remember that MyBitcoins gadget is made to be extremely configurable, and it's very simple to switch to another exchange. I've already posted this a few replies back, but here goes again:
BTC-Eexchange URL:
https://btc-e.com/api/2/btc_usd/tickerexhange rate JSON key: sell
field 1 JSON key: sell
field 2 JSON key: last
field 3 JSON key: buy
Vircurexexchange URL:
https://vircurex.com/api/get_info_for_1_currency.json?base=BTC&alt=USDexhange rate JSON key: lowest_ask
field 1 JSON key: lowest_ask
field 2 JSON key: last_trade
field 3 JSON key: highest_bid
Bitstampexchange URL:
https://www.bitstamp.net/api/ticker/exhange rate JSON key: lowest_ask
field 1 JSON key: ask
field 2 JSON key: last
field 3 JSON key: bid