Keyboard input slowdowns on iPad mini

Question

While typing into a text box on various forums and when entering comments on a blog site I will get to a point the I can no longer enter text.  The audible feedback of the keyboard continues but no letters appear.  If I wait, sometimes a letter or two may appear.  Generally I'd I backspace it will delete  letters, but I'm still unable to type additional  text.  It's not site limitation as I can type long text enters in Notes and paste the text just fine.  Preforming the same action from an iPad 3 or and iPhone 4S does not have this problem. I don't remember having this problem with iPad 2.
I think this a memory relate to the iPad mini or iOS 6.
This can happen if Safari is the only App currently running, but at a higher frequencies with other Apps list the recent used App bar.  If I switch out of Safari and run XSysinfo the amount of free memory is low. If I pull to gather memory (missed reference as a memory refresh) then switch back to Safari, most times I can continue typing. This is a course if Safari was able to retain the tab in memory, which does not seem to be the rule.  I've had free memory as low as 5.2MB and after recover be at 200+MB.
If I open two tabs in Safari (after memory gather) I can switch the two tabs with content retained, but opening more tabs will cause each tab to be redrawn as you switch between them.  Again this not the behavior experienced on an iPad 3.  I have experienced the problem on various websites and to a far lesser extent in notes, pages and email.
AND;
Yes, I have with newly boot device
No, I have not pulled the XSysyinfo screen more than once.
Yes, the more Apps I'm in and out of before a reboot, a gather the faster the problem wii appear
No, removing App icons/stubs from recently run Apps bar does not release all memory used by App.
I think this related to them iPad mini having only 512MB of Ram (Apples only fail on the mini), but I didn't have this problem on the iPad 2.
Here's the Question, has anyone else seen or heard of the problem?  Could it be a hardware failure (unlikely, but preferable)?
iPad mini 32GB, AT&T cellular (not turn on)

Answer 1

Don't know why it tagged your reply as helpfull.
First off it's not a task bar, it's a recently used App bar.  Wether an App can run in the background, suspend itself, just hang around in memory or kills itself on exit they still show up in what you refer to as the Task Bar. 
This suggestion should have been negated by the line "No, removing App icons/stubs from the resently run Apps bar does not release all memory used by [an] App". 
Your second idea was covered in the line "Yes, I have [the same problem] with newly boot[ed] device".
Ok, I left out a few words, but surely if you feel qualified to provide answers you should have been able to infer entened information.
Based on the complete text why would think these basic solutions would have been missed.  Neither of these suggestion are solutions, this would be like call ing your car manufacture with the problem, "I drive my car for about 15 minutes and then it stalls, after I roll to stop and wait about 2 minutes it will restart again"  and thier answers is "Stop driving after 14 minutes, turn your care off, wait 10 seconds and restart your car".