There are two different questions:
1. What caused the damege to your system and how to avoid it in the future
2. How to fix the damage (if possible)

You are asking the second question everywhere and get quite reasonable answers (about what tweaks could be used that might fix the problem and the general advice to reflash if nothing helps). But much more interesting for everyone and yourself too (if you reflash the device) is the answer to the first question. You don't provide any facts that can be verified except 'I installed some thirdparty applications' (without even mentioning installing which applications exactly caused the trouble) and don't help much in the investigation, but make very strange conclusions (from a developer point of view) calling the source of problem a 'virus'. That's not moving us anywhere.

I'm sorry to repeat again, but I already provided you with a possible answer to the first question ('What caused the damege to your system and how to avoid it in the future'). Just wait for a user installable package of WLAN driver, reflash your tablet and install the fix. After that if you encounter this 'virus' again, come back and report the problem.

As for recovering your broken system, you should understand that it is not always technically possible sometimes. For example if somebody is shot, surely treating wounds is very important for him, but depending on the damage, the patient may unfortunately die as recovery is sometimes impossible. But a solution for the community in general is to find the criminal to avoid similar problems in the future. In the posts to maemo-developers you are asking for the ways to 'cure the damage', but now you make your own conclusions about who the 'criminal' is. Anyway, I'm not too good at drawing an analogies, sorry.