Need some help with my new Android phone please....

1) I use the installed email client for my Gmail. I also have the Gmail app installed which can't be removed. I have set my LG email client to check for new email every 5 minutes, which it did do, but now for some reason, it doesn't retrieve them straight away. I use a mixture of 3G and Wi-Fi but shouldn't think that makes a difference.

Sometimes if I click 'refresh' new emails come through. Any ideas?

2) Is there a better Texting client I can get? The default one is too squashed and difficult to use and not very friendly on the eye. I have heard if you one from the store, you get 2 notifications for each text...

3) App killer? Do I need one? Sometimes when I check, there are about 15 apps running by the end of the day, surely this slows my phone down?

4) Finally, flash.....I know you can't get it for this phone can you? 10.1 or 10.2 don't actually even appear on the marketplace. I tried skyfire but videos still don't be displayed.

Thanks in advance.

well for question 1 i don't know y this is happening

question 2 u can use chomp sms it has iphone like message screens or handcent sms or go sms all available from the market just try them in order see which one u like the best but don't have all three installed at once lol and remember to go into the android sms app then go to settings by pressing menu then untick notifications so you don't get double notifications

and question 3 about flash have a search on Google as i couldn't find much about this

Anyone else know?