Try this the next time your iPad disconnects from your wi-fi network.

When your iPod displays the "re-enter your security key" screen, Do NOTHING.
Then Press AND HOLD the power button on the iPad, until the screen displays: "Slide To Turn Off". Do not slide, but Press "Cancel", and wait for the iPad to reconnect.
At this point you should be able to resume whatever you were doing.

Yes, I do haeuslsi
( am logged in as fiosron and ronadijcks by the way! )

I think what is happening, is that the "power-saving" setting on/in the iPad are such that the drivers for the wifi radio are either being disconnected (software based), or turned off (also software/driver based).
Apple's interest of eeking out as much battery life as possible supports this theory. Furthermore the fact that the radio signals seem to be intermittant and usually lower than say, an iPod, suggests this possibility even more. The amount of power provided (more power, less battery life) to the wifi radio is in direct relation to performance, therefore, my ideas may be valid.
BUT,
This however is just my guess as to why this is happening. I have not seen or been exposed to a specific set of events whilst using the iPad to come to solid conclusions as to when and why it does it.

I do however believe it can be solved with a driver/software update, but trust me , it will come at the expense of battery life. That said, I am ok with that. I want it tor work right. If that means losing an hour of usable time while connected to a wifi, so be it!

Glad this helped you!

Inachu
Not sure why you responded but I am glad your's is working!

Yes, I do haeuslsi
( am logged in as fiosron and ronadijcks by the way! )

I think what is happening, is that the "power-saving" setting on/in the iPad are such that the drivers for the wifi radio are either being disconnected (software based), or turned off (also software/driver based).
Apple's interest of eeking out as much battery life as possible supports this theory. Furthermore the fact that the radio signals seem to be intermittant and usually lower than say, an iPod, suggests this possibility even more. The amount of power provided (more power, less battery life) to the wifi radio is in direct relation to performance, therefore, my ideas may be valid.
BUT,
This however is just my guess as to why this is happening. I have not seen or been exposed to a specific set of events whilst using the iPad to come to solid conclusions as to when and why it does it.

I do however believe it can be solved with a driver/software update, but trust me , it will come at the expense of battery life. That said, I am ok with that. I want it tor work right. If that means losing an hour of usable time while connected to a wifi, so be it!

Glad this helped you!

This seems to be helping some of those who are intermittently losing their wifi connections..
GREAT! At least it is a fast solution for now..

Tonton,
I have had no luck going from "sleep" to an auto reconnect. I have had to go to the steps I outlined , in my case anyways!
I wonder if that is working for most folks? But ya it would definitely be faster.

I hope more folks will chime in and let me know if this helped them

Hey, it just dawned on me the difference for your case... You have a password set for your iPad when waking it up! So yes this might also cause a reinitialization of the wifi radio! Cool!

So, anyone who has set up a password on their iPad may benefit from a slightly faster reset by going to sleep mode and then typing in their ipad's password! Makes sense.. This chain of events causes the device to reset connections, either with a password from sleep or a power off to cancel event!