a lot of error 500 / transaction aborted errors

[setekh]

I managed to make a testbed with ~ 15 users that are non-stop logged in OG, and now there are a lot of transaction aborted errors, the MySQL is set to InnoDB and max_connections = 50 / max_connect_errors = 16 that would be enough for that and more, but still.
Any ideas, does anyone get that as well ?
About the error 500, they seem to get fixed with just refresh, i will check on that soon, but for now the biggest mystery is the transaction aborted error , as it must be thrown from the MySQL not been able to do it's job.

[ignacio]

The error -1 happens when an ajax request gets canceled due to a timeout. If you are having a slow internet connection you can get many of these.

If the error 500 happened on the calendar it could be due to a bug described on another post about an undefined javascript variable.