By using the Cisco VPN Client, sometimes I cannot access my networks (e.g. failed to ping the network) after the VPN tunnel established. Until I have disconnected and re-connected it again, the problem is solved.
Hardware : Cisco 3825
IOS : 12.4(17b)
Image file : c3825-advseurityk9-mz.124-17b.bin
VPN Client : Cisco VPN Client 5.0.07
Any suggestions and comments are very appreciated.