A method and system are disclosed in a network application for decreasing performance degradation by preventing inadvertent launching of multiple copies of identical network applications. Initially, a remote application is launched from a server to a client in response to a user input event. Next, it is determined if a remote application identical to the remote application has already been launched. If the remote application has already been launched, an elapsed time since the identical remote application was initially launched is determined. Thereafter, the launching of the network application is terminated if the elapsed time is less than a preset value. Alternatively, if the elapsed time is greater than the preset value, the network application is launched. Additionally, if the elapsed time is greater than the preset value, a weighted value of applications running with the client is determined. Thereafter, the network application is launched if the weighted value is small. Alternatively, if the weighted value is large, launching of the network application is terminated.