Comment 1 for bug 917575

Thanks for the report. It's not completely clear to me what circumstances you're hitting the locking issue, is it under bzr-explorer only of with switch from the command line as well? Do you sometimes see the problem reported as bug 901104 or only the lock error? An extract of your .bzr.log from a switch that fails would be helpful, but to make progress we really need to find out what has the dirstate file open. If you're familiar with a debugging tool or something like Process Explorer finding out which process are involved may be start.