I don't mess up "dial" myself ... hmmm ok that's because I usually type something like "pls call jon at 123-4567 ga"
however .. I also don't tend to "backup" and correct spelling, nor "xxxxxx" unless I reallllllly kill a word. There are words and letter combinations that I do have problems with though ( oe/eo, ie/ei , ae/ea ) and some words I just for the life of me mis-spell almost constantly. I grew up oral, but there are so many letter combinations that sound the same to me that it's like a toss up on what comes first somedays. For the record I read ALOT of books - so it's not an exposure issue. I also seem to consistantly mistype "some as soem" , and "like as liek" ... in this case it a matter of typing/muscle memory messing up lol.
one thing that might be happening is that because we now use email and IM so much for "chatting" that we tend to say "email me" , or "mail ..." ... perhaps it's a blending of "dial" and "mail" - which somehow gets typed "dail" ?
of course ... maybe we just can't spell lol
hmmm did I help at all here ... or did I just ramble