Seems the Bancor ICO has crashed the main MEW node so you cannot access the MyEtherWallet and send Eth to buy into the ICO

the way round it , supposedly, was to click on top right corner in MEW and change the node

 but having done that and getting a MEW message to say I successfully sent using the etherscan.io node , I cannot find my tx anywhere, it appeared to send successfully, but has yet to show up anywhere is not even pending on etherscan.io
not going to risk sending again in case something is wrong out there.

Bancor twitter says the ICO has been deliberately attacked.

will be interesting to see what comes of this. it's a big balls up all round for people trying to invest.

EDIT:

my pending tx has only just showed up on etherscan.io about 20 minutes later, so was completely missing until now.

also Bancor have announced they are extending the 1 hour guarantee to 3 hours due to the network attack but this has broken contract for people who paid BitcoinSuisseAG good money to guarantee there position in that hour. thats going to be a legal mess they are going to have to deal with when the dust settles.

interesting times.