Michelin and Specialized make the better tubes. I use Specialized and never have that issue, but I also use them because that's all the LBS carries. Michelin latex tubes though will fail at the valve but the butyl tubes are better. I've had issues with Conti tubes though. Tube manufactures have changed the way they make tubes by not reinforcing the presta to tube area as well as they use to, this is why more and more pump manufactures are making mini pumps with hoses instead of direct connection because the direct connection puts more stress on the tube.

See this for detailed info on this process: http://www.machinehead-software.co.u...ta_valves.html this just addresses the problem with threaded prestas, another problem in itself.