Quote from kauflaune:
I am with IB since 2008 and had no such issues for more than 3 years. When the re-challenge popup happened to me for the first time, I opened a ticket on the same day January 26, 2012 and was a few days later advised by IB to opt out the security device just for TWS. Even though I set up an IP restriction for TWS login and use the SSL connection, I still had to sign that very unfair waiver stating that if anything goes wrong for whatever reason, IB will not compensate me.
The re-challenge popup makes TWS go pink until the codes are entered manually, which is guaranteed to screw my automated trading, as I am not always in front of the monitor, so I had to opt out and sign the waiver. My automation would work reliable if it wasn't for IB's totally unnecessary re-challenge popup.
When I read on this thread that the issue should be fixed according to IB kostia00, and other members confirmed this, I was happy to opt back into the Secure Login System. As the issue was fixed for a few months, it is now even more frustrating to see that very same bug happening again repeatedly, now in June 2012.