I've also noticed a funny thing, don't know if this is already posted: when you cast Melfs Minute Meteors and attack with them with a weapon in your off-hand, you get something like this:
To Hit Rol: x+y = z
blabla did a damage
To Hit Rol: x+y = z
blabla did a damage
To Hit ROl (left): x + y = z
blabla did a (left) damage
So you actually get one ranged attack per round with your off hand weapon, even though it's a melee weapon! Imagine MMM + Crom Faeyr in off-hand: ranged golem killer...
The only real problem i've noticed this far is that dungeons are very frustrating without someone to open locks and remove traps (my familiar can find them, but not remove them). I can open most locks with a knock spell or a DUHM+bash, but it's still irritating me. I also already have trouble with keeping inventory space in a six-party game, and now i have to carry al loot myself... Difficult choices are to come my way. Perhaps i'll just summon a Bag of Holding with a CLUA command, after all i'm playing BG2 the roleplaying game, and not BG2 the inventory management game, like the bioware guy said it
Edit: just finished the slaver ship. After 2 melee tries (and failures), i decided to go on the magic tour. Preparation was not little: Stoneskin, Mirror Image, Fireshield: Blue and Draw Upon Holy Might. I entered via the sewers, paused immediatly and fired of a skull trap in the centre of the room, bringing most guards to badly injured or near death. I activated offensive spin and attacked the priest of Cyric with my katanas. He fell after two hits. The other guards attacked me immediatly, and i let them do so. The stoneskin would insure my health, and the fireshield would soon finish what the skull trap had started. After that, one man was remaining: Haegan, the captain, who had not spotted me yet. A chromatic orb later and his evil soul left his body, without even injuring the man (thats me

) that fired the orb.
I really start to like this solo, you learn to appreciate spells and items you've never used before. Next is the battle in the rear of the ship (the mages, guards and Yuan-Ti-, but bad enough for them i've got one stolen scroll of power word: kill left
Edit #2: killed the last slaver group and got my reward from Hendak. I now have 20000 gold, and in a party-game i would probably pay Gaelan now. Bad luck for Imoen, as this is a solo game and i can use the money for a new weapon: Dak'Kons Zerth Blade. The scroll of power word: kill was too valuable for me so i summoned an air elemental (scroll from Irenicus dungeon), which was a 24HD one! Then i showed myself to the Yuan-Ti and the mages, who followed me to the small passageway (i survived the trap there 3-4 times) where the cells are and were one by one slain by the elemental, with some spell support from me (mainly the dispelling of stoneskins or mirror images). Also got another level. On to the sewers now, to retrieve the Cloak of the Sewers and activate the Haer'Dalis quest to get my stronghold.