I have an odd problem with a couple of my users. I have been working with one that works from an office in our County Courthouse and chalked up the problems to getting off their network. But last night my boss started having the same problems and I haven't made any changes to the ASA for a long while.
The issue is that they will get connected and randomly lose connection for no apparent reason. I need to try and help the remote user yesterday and connected through VNC to her laptop and was surprised that after roughly 10-15 minutes I was still connected. So I got the bright idea to just start a constant ping from my workstation to her VPN IP.
She stayed connected for 30 minutes. I stopped it and within minutes she was DC'd. My boss tried this last night as he started having issues. This after being connected for over 6+ hours throughout the day while I was sitting here.
I did realize that the client we are using (which is what came with the ASA 5505 when we bought it) is/was version 5.0.02.0290. I logged into Cisco and see that they have version 5.0.05.0290 now which appears to have been released last month (March 09). I have went through all the readme.txt files for the other 2 versions that appear to have been released since ours and don't see any glaring issues that either are known problems or fixed issues.
The closest appear to be CSCsi26001 where disconnects can happen on reauth on rekey with a saved password. We do have the save password option currently on, but the reauth on rekey is disabled as per the default policy. So I don't think that is our issue.
Any one seen this type of behavior? I know that at the courthouse the router that is being used is a older its a linksys I believe. I have updated it to the most current bios but it is still several years old. I have to check today what my boss has at home.
I don't have this issue at home, but I have a Netgear Wireless router that I just bought to replace a failing one that I had.