Quote from: pxstein on Today at 06:34:10 PM

Electrum automatically converts all bitcoins in my wallet to corresponding EUR value in a separate column.
Sometimes I suspect that the conversion rate seems not the most recent one.

It does not take so long, just a few couples of minutes as pointed out by OmegaStarScream

Quote

From which server/source is the rate retrieved?

Specifically for the EUR - itBit, Kraken, BitcoinVenezuela, coindesk, Bitstamp

Quote from: pxstein on Today at 06:34:10 PM

Where can I find the (virtual) EUR sum of all my BitCoins?
Read the sum of a all filled 7 addresses

Just look at the bottom left of the window of your electrum wallet, next to the green dot