Citrix keeps dropping connection to server every 2 minutes or so

Please no comments about dialup :-). The problem is we connect to the dialup service and never loose connection. but when I launch a citrix session I can login and then launch an application, it will launch the application and you can browse throug it for about 2 minutes and then looses conection.It then tries to reconnect and you go through the whole routine again.
Have uninstalled client and reinstalled with the latest and greatest citrix web client. I have tried to slow down the connection speed aslo through the modem properties.
 
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chasmantAsked:
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kind4meCommented:
Have you connected from other locations and do you have the same issue.  Sounds like you have a dirty line on one of the ends.  You have to figure out of the dirty line is on the office end or the client end.  If it is at the office end you need to have your telcom providers to come in and test / replace the line.

Citrix has about a 56K footprint (can be smaller on somesettings) but regardless you can't get it below about 33K.  Citrix, being emulation software, does not deal with low bandwith well. IT will drop the connection as unsynced and put the session into disocnnected so you can come back in at the same point you left off.

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chasmantAuthor Commented:
It's really strange though If I use XP it works fine it seems to be Vista that is causing the problem or Vista with Citrix not sure. I watched the connection speed and it never fell below 54K so that shouldn't be the problem and there was only one error listed and that really happened early before the time-out
The laptop never looses connectivity to the dialup just to the citrix server.
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kind4meCommented:
Oh see you didn't tell us this was vista.  Also what other trouble shooting have you done besides the two different laptops.  That at least tells us you don't have a dirty line in the office.  

Do you have a modem pool, or one modem.  If so does the vista computer connect to a different modem then the XP?  

Let's see if there is something in the modem.  It makes sense that the dial up would still be connected even if citrix dropped.  Citrix is really not able to deal with issues then regular dial up because Citrix requires a constant flow of information.

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chasmantAuthor Commented:
connects to a Modem pool and  the call is not treated different if it is xp or vista. With anyother laptop with xp this loosing of connection is not a problem. Is ther any settings that we can change to make it more tollerent of the synching issue?
I have dialed in about 20 times and the same results so I don't think it is one of the modems
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chasmantAuthor Commented:
Do you think this could be a IPv6 in Vista?
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BLipmanCommented:
Did you try disabling the windows firewall?  Perhaps return keepalive traffic is getting lost.  Have you attempted to slim down your sessions?  I suggest things like:
-limit mapped printers to 1
-throttle bandwidth via Citrix Policies, especially clipboard, drive maps, and printing
-eliminate things like mapped sound, com ports, etc that you can live without
-make sure your clients are caching bitmaps and are optimized for low bandwidth
-limit screen size and color depth
Vista also has some frame scaling technologies...I would initially suspect something in the network stack.  
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BLipmanCommented:
You could try disabling the window scaling feature: http://support.microsoft.com/kb/935400
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chasmantAuthor Commented:
As I researched this more it seems to be a ongoing issue with Microsoft and Citrix with dial up and terminal services. I guesss I will have to wait till one of them admits there is a problem. I tried all of the sugesstions with no luck, but I would like to thank averyone who responded
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