Problem loading image into texture memory

Hi there, I am currently porting our new casual PC game over to the iPad using the pfi, the game was written in Flash so the porting process isn't that hard thankfully, it's mainly just optimizing the graphics.
So far things are going smoothly, I was initially worried about graphical performance, but since we put everything into the GPU that's no longer a concern- it runs super smooth at 60fps at 1024x768, we can have a hundred large bitmaps rotating and alphaing at once with no slowdown.
However there is one weird problem which is really worrying me at this point- it seems that the speed at which images are loaded into video memory as textures is vastly different depending on what else is being run on the iPad, for example:
* If I run my game with nothing else in memory, it will run fine at 60fps, and load up large images into texture memory very fast.
* If I run another App, in this case a Virtual piano app for a while, then close that App via the Home button (so the piano app is still in memory but suspended due to the multitasking), then when I run my game, it will run ok initially, but when I try to load a large (1024x512) image into texture memory it pauses the whole game for several seconds.
* To make matters worse, if I repeat the same test using the RAGE app from ID software (which is very graphically intense), my game actually slows down to 1 fps and runs extremely slowly as soon as I run it and the frame rate never returns to normal. If I then double-click the home button, shut down RAGE, then go back to my game, it will run fine.
I have read that sometimes when you load images into texture memory it will have to reclaim that memory from other apps, but that doesnt exaplain why it slows down every time I want to load something, or why the game would slow right down to a crawl.
So then it seems that having other Apps in memory is slowing down my game, or stopping it from working altogether. Obviously this is not ideal and would stop us from releasing, so is there any way I can stop this, has anyone come across the problem? Please help!
PS. this problem also happens on an iPhone 4, as I have performed the same tests.

Hi _mz84
First thing I noticed, is that you did not close your
<embed> tag
<embed src="gallery1.swf" bgcolor="#421628" width="385"
height="611" wmode="transparent" />
If that doesn't solve your troubles, try the following
container.
<object type="application/x-shockwave-flash" height="611"
width="385" align="middle" data="gallery1.swf">
<param name="allowScriptAccess" value="never" />
<param name="allowNetworking" value="internal" />
<param name="movie" value="gallery1.swf" />
<param name="quality" value="high" />
<param name="scale" value="noscale" />
<param name="wmode" value="transparent" />
<param name="bgcolor" value="#421628" />
</object>
hope this helps out.

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